Class Validation

Validation Class. Used for validation of model data

Offers different validation methods.

Namespace: Cake\Validation

Constants summary

  • string
    COMPARE_EQUAL
    '=='
  • string
    COMPARE_GREATER
    '>'
  • string
    COMPARE_GREATER_OR_EQUAL
    '>='
  • string
    COMPARE_LESS
    '<'
  • string
    COMPARE_LESS_OR_EQUAL
    '<='
  • string
    COMPARE_NOT_EQUAL
    '!='
  • string
    COMPARE_NOT_SAME
    '!=='
  • string
    COMPARE_SAME
    '==='
  • string
    DATETIME_ISO8601
    'iso8601'
  • string
    DEFAULT_LOCALE
    'en_US'

Properties summary

  • $_pattern protected static
    array

    Some complex patterns needed in multiple places

  • $errors public static
    array

    Holds an array of errors messages set in this class.

Method Summary

  • _check() protected static

    Runs a regular expression match.

  • _getDateString() protected static

    Converts an array representing a date or datetime into a ISO string.

  • _populateIp() protected static

    Lazily populate the IP address patterns used for validations

  • _reset() protected static

    Reset internal variables for another validation run.

  • alphaNumeric() public static

    Checks that a string contains only integer or letters.

  • ascii() public static

    Check that the input value is within the ascii byte range.

  • asciiAlphaNumeric() public static

    Checks that a string contains only ascii integer or letters.

  • blank() public static

    Returns true if field is left blank -OR- only whitespace characters are present in its value Whitespace characters include Space, Tab, Carriage Return, Newline

  • boolean() public static

    Validates if passed value is boolean-like.

  • cc() public static

    Backwards compatibility wrapper for Validation::creditCard().

  • compareFields() public static

    Compare one field to another.

  • compareWith() public static

    Compare one field to another.

  • comparison() public static

    Used to compare 2 numeric values.

  • containsNonAlphaNumeric() public static

    Checks if a string contains one or more non-alphanumeric characters.

  • creditCard() public static

    Validation of credit card numbers.

  • custom() public static

    Used when a custom regular expression is needed.

  • date() public static

    Date validation, determines if the string passed is a valid date.

  • datetime() public static

    Validates a datetime value

  • decimal() public static

    Checks that a value is a valid decimal. Both the sign and exponent are optional.

  • email() public static

    Validates for an email address.

  • equalTo() public static

    Checks that value is exactly $comparedTo.

  • extension() public static

    Checks that value has a valid file extension.

  • falsey() public static

    Validates if given value is falsey.

  • fileSize() public static

    Checks the filesize

  • geoCoordinate() public static

    Validates a geographic coordinate.

  • getFilename() protected static

    Helper for reading the file out of the various file implementations we accept.

  • hexColor() public static

    Check that the input value is a 6 digits hex color.

  • iban() public static

    Check that the input value has a valid International Bank Account Number IBAN syntax Requirements are uppercase, no whitespaces, max length 34, country code and checksum exist at right spots, body matches against checksum via Mod97-10 algorithm

  • imageHeight() public static

    Validates the image width.

  • imageSize() public static

    Validates the size of an uploaded image.

  • imageWidth() public static

    Validates the image width.

  • inList() public static

    Checks if a value is in a given list. Comparison is case sensitive by default.

  • ip() public static

    Validation of an IP address.

  • isArray() public static

    Check that the input value is an array.

  • isInteger() public static

    Check that the input value is an integer

  • isScalar() public static

    Check that the input value is a scalar.

  • iso8601() public static

    Validates an iso8601 datetime format ISO8601 recognize datetime like 2019 as a valid date. To validate and check date integrity, use @see \Cake\Validation\Validation::datetime()

  • latitude() public static

    Convenience method for latitude validation.

  • lengthBetween() public static

    Checks that a string length is within specified range.

  • localizedTime() public static

    Date and/or time string validation.

  • longitude() public static

    Convenience method for longitude validation.

  • luhn() public static

    Luhn algorithm

  • maxLength() public static

    Checks whether the length of a string (in characters) is smaller or equal to a maximal length.

  • maxLengthBytes() public static

    Checks whether the length of a string (in bytes) is smaller or equal to a maximal length.

  • mimeType() public static

    Checks the mime type of a file.

  • minLength() public static

    Checks whether the length of a string (in characters) is greater or equal to a minimal length.

  • minLengthBytes() public static

    Checks whether the length of a string (in bytes) is greater or equal to a minimal length.

  • money() public static

    Checks that a value is a monetary amount.

  • multiple() public static

    Validates a multiple select. Comparison is case sensitive by default.

  • naturalNumber() public static

    Checks if a value is a natural number.

  • notAlphaNumeric() public static

    Checks that a doesn't contain any alpha numeric characters

  • notAsciiAlphaNumeric() public static

    Checks that a doesn't contain any non-ascii alpha numeric characters

  • notBlank() public static

    Checks that a string contains something other than whitespace

  • notEmpty() public static

    Backwards compatibility wrapper for Validation::notBlank().

  • numElements() public static

    Used to check the count of a given value of type array or Countable.

  • numeric() public static

    Checks if a value is numeric.

  • range() public static

    Validates that a number is in specified range.

  • time() public static

    Time validation, determines if the string passed is a valid time.

  • truthy() public static

    Validates if given value is truthy.

  • uploadError() public static

    Checking for upload errors

  • uploadedFile() public static

    Validate an uploaded file.

  • url() public static

    Checks that a value is a valid URL according to https://www.w3.org/Addressing/URL/url-spec.txt

  • userDefined() public static

    Runs an user-defined validation.

  • utf8() public static

    Check that the input value is a utf8 string.

  • uuid() public static

    Checks that a value is a valid UUID - https://tools.ietf.org/html/rfc4122

Method Detail

_check() protected static 

_check(mixed $check, mixed $regex)

Runs a regular expression match.

Parameters

mixed $check

Value to check against the $regex expression

string $regex

Regular expression

Returns

bool

Success of match

_getDateString() protected static 

_getDateString(mixed $value)

Converts an array representing a date or datetime into a ISO string.

The arrays are typically sent for validation from a form generated by the CakePHP FormHelper.

Parameters

array $value

The array representing a date or datetime.

Returns

string

_populateIp() protected static 

_populateIp()

Lazily populate the IP address patterns used for validations

_reset() protected static 

_reset()

Reset internal variables for another validation run.

alphaNumeric() public static 

alphaNumeric(mixed $check)

Checks that a string contains only integer or letters.

This method's definition of letters and integers includes unicode characters. Use asciiAlphaNumeric() if you want to exclude unicode.

Parameters

string $check

Value to check

Returns

bool

Success

ascii() public static 

ascii(mixed $value)

Check that the input value is within the ascii byte range.

This method will reject all non-string values.

Parameters

mixed $value

The value to check

Returns

bool

asciiAlphaNumeric() public static 

asciiAlphaNumeric(mixed $check)

Checks that a string contains only ascii integer or letters.

Parameters

mixed $check

Value to check

Returns

bool

Success

blank() public static 

blank(mixed $check)

Returns true if field is left blank -OR- only whitespace characters are present in its value Whitespace characters include Space, Tab, Carriage Return, Newline

Parameters

string $check

Value to check

Returns

bool

Success

boolean() public static 

boolean(mixed $check, array $booleanValues)

Validates if passed value is boolean-like.

The list of what is considered to be boolean values, may be set via $booleanValues.

Parameters

bool|int|string $check

Value to check.

array $booleanValues optional

List of valid boolean values, defaults to [true, false, 0, 1, '0', '1'].

Returns

bool

Success.

cc() public static 

cc(mixed $check, mixed $type, mixed $deep, mixed $regex)

Backwards compatibility wrapper for Validation::creditCard().

Parameters

string $check

credit card number to validate

string|string[] $type optional

'all' may be passed as a string, defaults to fast which checks format of most major credit cards if an array is used only the values of the array are checked. Example: ['amex', 'bankcard', 'maestro']

bool $deep optional

set to true this will check the Luhn algorithm of the credit card.

string|null $regex optional

A custom regex can also be passed, this will be used instead of the defined regex values

Returns

bool

Success

See Also

\Cake\Validation\Validation::creditCard()

compareFields() public static 

compareFields(mixed $check, mixed $field, mixed $operator, mixed $context)

Compare one field to another.

Return true if the comparison matches the expected result.

Parameters

mixed $check

The value to find in $field.

string $field

The field to check $check against. This field must be present in $context.

string $operator

Comparison operator.

array $context

The validation context.

Returns

bool

compareWith() public static 

compareWith(mixed $check, mixed $field, mixed $context)

Compare one field to another.

If both fields have exactly the same value this method will return true.

Parameters

mixed $check

The value to find in $field.

string $field

The field to check $check against. This field must be present in $context.

array $context

The validation context.

Returns

bool

comparison() public static 

comparison(mixed $check1, mixed $operator, mixed $check2)

Used to compare 2 numeric values.

Parameters

string|int $check1

The left value to compare.

string $operator

Can be either a word or operand is greater >, is less <, greater or equal >= less or equal <=, is less <, equal to ==, not equal !=

string|int $check2

The right value to compare.

Returns

bool

Success

containsNonAlphaNumeric() public static 

containsNonAlphaNumeric(mixed $check, mixed $count)

Checks if a string contains one or more non-alphanumeric characters.

Returns true if string contains at least the specified number of non-alphanumeric characters

Parameters

string $check

Value to check

int $count optional

Number of non-alphanumerics to check for

Returns

bool

Success

creditCard() public static 

creditCard(mixed $check, mixed $type, mixed $deep, mixed $regex)

Validation of credit card numbers.

Returns true if $check is in the proper credit card format.

Parameters

mixed $check

credit card number to validate

string|string[] $type optional

'all' may be passed as a string, defaults to fast which checks format of most major credit cards if an array is used only the values of the array are checked. Example: ['amex', 'bankcard', 'maestro']

bool $deep optional

set to true this will check the Luhn algorithm of the credit card.

string|null $regex optional

A custom regex can also be passed, this will be used instead of the defined regex values

Returns

bool

Success

See Also

\Cake\Validation\Validation::luhn()

custom() public static 

custom(mixed $check, mixed $regex)

Used when a custom regular expression is needed.

Parameters

string $check

The value to check.

string|null $regex optional

If $check is passed as a string, $regex must also be set to valid regular expression

Returns

bool

Success

date() public static 

date(mixed $check, mixed $format, mixed $regex)

Date validation, determines if the string passed is a valid date.

keys that expect full month, day and year will validate leap years.

Years are valid from 0001 to 2999.

Formats:

  • dmy 27-12-2006 or 27-12-06 separators can be a space, period, dash, forward slash
  • mdy 12-27-2006 or 12-27-06 separators can be a space, period, dash, forward slash
  • ymd 2006-12-27 or 06-12-27 separators can be a space, period, dash, forward slash
  • dMy 27 December 2006 or 27 Dec 2006
  • Mdy December 27, 2006 or Dec 27, 2006 comma is optional
  • My December 2006 or Dec 2006
  • my 12/2006 or 12/06 separators can be a space, period, dash, forward slash
  • ym 2006/12 or 06/12 separators can be a space, period, dash, forward slash
  • y 2006 just the year without any separators

Parameters

mixed $check

a valid date string/object

string|array $format optional

Use a string or an array of the keys above. Arrays should be passed as ['dmy', 'mdy', etc]

string|null $regex optional

If a custom regular expression is used this is the only validation that will occur.

Returns

bool

Success

datetime() public static 

datetime(mixed $check, mixed $dateFormat, mixed $regex)

Validates a datetime value

All values matching the "date" core validation rule, and the "time" one will be valid

Parameters

mixed $check

Value to check

string|array $dateFormat optional

Format of the date part. See Validation::date() for more information. Or Validation::DATETIME_ISO8601 to validate an ISO8601 datetime value.

string|null $regex optional

Regex for the date part. If a custom regular expression is used this is the only validation that will occur.

Returns

bool

True if the value is valid, false otherwise

See Also

\Cake\Validation\Validation::date()

\Cake\Validation\Validation::time()

decimal() public static 

decimal(mixed $check, mixed $places, mixed $regex)

Checks that a value is a valid decimal. Both the sign and exponent are optional.

Valid Places:

  • null => Any number of decimal places, including none. The '.' is not required.
  • true => Any number of decimal places greater than 0, or a float|double. The '.' is required.
  • 1..N => Exactly that many number of decimal places. The '.' is required.

Parameters

mixed $check

The value the test for decimal.

int|true|null $places optional

Decimal places.

string|null $regex optional

If a custom regular expression is used, this is the only validation that will occur.

Returns

bool

Success

email() public static 

email(mixed $check, mixed $deep, mixed $regex)

Validates for an email address.

Only uses getmxrr() checking for deep validation, or any PHP version on a non-windows distribution

Parameters

mixed $check

Value to check

bool $deep optional

Perform a deeper validation (if true), by also checking availability of host

string|null $regex optional

Regex to use (if none it will use built in regex)

Returns

bool

Success

equalTo() public static 

equalTo(mixed $check, mixed $comparedTo)

Checks that value is exactly $comparedTo.

Parameters

mixed $check

Value to check

mixed $comparedTo

Value to compare

Returns

bool

Success

extension() public static 

extension(mixed $check, mixed $extensions)

Checks that value has a valid file extension.

Parameters

string|array|\Psr\Http\Message\UploadedFileInterface $check

Value to check

string[] $extensions optional

file extensions to allow. By default extensions are 'gif', 'jpeg', 'png', 'jpg'

Returns

bool

Success

falsey() public static 

falsey(mixed $check, array $falseyValues)

Validates if given value is falsey.

The list of what is considered to be falsey values, may be set via $falseyValues.

Parameters

bool|int|string $check

Value to check.

array $falseyValues optional

List of valid falsey values, defaults to [false, 0, '0'].

Returns

bool

Success.

fileSize() public static 

fileSize(mixed $check, mixed $operator, mixed $size)

Checks the filesize

Will check the filesize of files/UploadedFileInterface instances by checking the filesize() on disk and not relying on the length reported by the client.

Parameters

string|array|\Psr\Http\Message\UploadedFileInterface $check

Value to check.

string|null $operator optional

See Validation::comparison().

int|string|null $size optional

Size in bytes or human readable string like '5MB'.

Returns

bool

Success

geoCoordinate() public static 

geoCoordinate(mixed $value, array $options)

Validates a geographic coordinate.

Supported formats:

  • <latitude>, <longitude> Example: -25.274398, 133.775136

Options

  • type - A string of the coordinate format, right now only latLong.
  • format - By default both, can be long and lat as well to validate only a part of the coordinate.

Parameters

mixed $value

Geographic location as string

array $options optional

Options for the validation logic.

Returns

bool

getFilename() protected static 

getFilename(mixed $check)

Helper for reading the file out of the various file implementations we accept.

Parameters

string|array|\Psr\Http\Message\UploadedFileInterface $check

The data to read a filename out of.

Returns

string|false

Either the filename or false on failure.

hexColor() public static 

hexColor(mixed $check)

Check that the input value is a 6 digits hex color.

Parameters

mixed $check

The value to check

Returns

bool

Success

iban() public static 

iban(mixed $check)

Check that the input value has a valid International Bank Account Number IBAN syntax Requirements are uppercase, no whitespaces, max length 34, country code and checksum exist at right spots, body matches against checksum via Mod97-10 algorithm

Parameters

mixed $check

The value to check

Returns

bool

Success

imageHeight() public static 

imageHeight(mixed $file, mixed $operator, mixed $height)

Validates the image width.

Parameters

array $file

The uploaded file data from PHP.

string $operator

Comparison operator.

int $height

Min or max width.

Returns

bool

imageSize() public static 

imageSize(mixed $file, mixed $options)

Validates the size of an uploaded image.

Parameters

mixed $file

The uploaded file data from PHP.

array $options

Options to validate width and height.

Returns

bool

Throws

InvalidArgumentException

imageWidth() public static 

imageWidth(mixed $file, mixed $operator, mixed $width)

Validates the image width.

Parameters

array $file

The uploaded file data from PHP.

string $operator

Comparison operator.

int $width

Min or max width.

Returns

bool

inList() public static 

inList(mixed $check, array $list, mixed $caseInsensitive)

Checks if a value is in a given list. Comparison is case sensitive by default.

Parameters

mixed $check

Value to check.

string[] $list

List to check against.

bool $caseInsensitive optional

Set to true for case insensitive comparison.

Returns

bool

Success.

ip() public static 

ip(mixed $check, mixed $type)

Validation of an IP address.

Parameters

mixed $check

The string to test.

string $type optional

The IP Protocol version to validate against

Returns

bool

Success

isArray() public static 

isArray(mixed $value)

Check that the input value is an array.

Parameters

mixed $value

The value to check

Returns

bool

isInteger() public static 

isInteger(mixed $value)

Check that the input value is an integer

This method will accept strings that contain only integer data as well.

Parameters

mixed $value

The value to check

Returns

bool

isScalar() public static 

isScalar(mixed $value)

Check that the input value is a scalar.

This method will accept integers, floats, strings and booleans, but not accept arrays, objects, resources and nulls.

Parameters

mixed $value

The value to check

Returns

bool

iso8601() public static 

iso8601(mixed $check)

Validates an iso8601 datetime format ISO8601 recognize datetime like 2019 as a valid date. To validate and check date integrity, use @see \Cake\Validation\Validation::datetime()

Parameters

mixed $check

Value to check

Returns

bool

True if the value is valid, false otherwise

See Also

\Cake\Validation\Regex
credits: https://www.myintervals.com/blog/2009/05/20/iso-8601-date-validation-that-doesnt-suck/

latitude() public static 

latitude(mixed $value, array $options)

Convenience method for latitude validation.

Parameters

mixed $value

Latitude as string

array $options optional

Options for the validation logic.

Returns

bool

See Also

\Cake\Validation\Validation::geoCoordinate()

Links

https://en.wikipedia.org/wiki/Latitude

lengthBetween() public static 

lengthBetween(mixed $check, mixed $min, mixed $max)

Checks that a string length is within specified range.

Spaces are included in the character count. Returns true if string matches value min, max, or between min and max,

Parameters

mixed $check

Value to check for length

int $min

Minimum value in range (inclusive)

int $max

Maximum value in range (inclusive)

Returns

bool

Success

localizedTime() public static 

localizedTime(mixed $check, mixed $type, mixed $format)

Date and/or time string validation.

Uses I18n::Time to parse the date. This means parsing is locale dependent.

Parameters

string|\DateTime $check

a date string or object (will always pass)

string $type optional

Parser type, one out of 'date', 'time', and 'datetime'

string|int|null $format optional

any format accepted by IntlDateFormatter

Returns

bool

Success

Throws

InvalidArgumentException
when unsupported $type given

See Also

\Cake\I18n\Time::parseDate()

\Cake\I18n\Time::parseTime()

\Cake\I18n\Time::parseDateTime()

longitude() public static 

longitude(mixed $value, array $options)

Convenience method for longitude validation.

Parameters

mixed $value

Latitude as string

array $options optional

Options for the validation logic.

Returns

bool

See Also

\Cake\Validation\Validation::geoCoordinate()

Links

https://en.wikipedia.org/wiki/Longitude

luhn() public static 

luhn(mixed $check)

Luhn algorithm

Parameters

mixed $check

Value to check.

Returns

bool

Success

See Also

https://en.wikipedia.org/wiki/Luhn_algorithm

maxLength() public static 

maxLength(mixed $check, mixed $max)

Checks whether the length of a string (in characters) is smaller or equal to a maximal length.

Parameters

mixed $check

The string to test

int $max

The maximal string length

Returns

bool

Success

maxLengthBytes() public static 

maxLengthBytes(mixed $check, mixed $max)

Checks whether the length of a string (in bytes) is smaller or equal to a maximal length.

Parameters

mixed $check

The string to test

int $max

The maximal string length

Returns

bool

Success

mimeType() public static 

mimeType(mixed $check, mixed $mimeTypes)

Checks the mime type of a file.

Will check the mimetype of files/UploadedFileInterface instances by checking the using finfo on the file, not relying on the content-type sent by the client.

Parameters

string|array|\Psr\Http\Message\UploadedFileInterface $check

Value to check.

array|string $mimeTypes optional

Array of mime types or regex pattern to check.

Returns

bool

Success

Throws

RuntimeException
when mime type can not be determined.
LogicException
when ext/fileinfo is missing

minLength() public static 

minLength(mixed $check, mixed $min)

Checks whether the length of a string (in characters) is greater or equal to a minimal length.

Parameters

mixed $check

The string to test

int $min

The minimal string length

Returns

bool

Success

minLengthBytes() public static 

minLengthBytes(mixed $check, mixed $min)

Checks whether the length of a string (in bytes) is greater or equal to a minimal length.

Parameters

mixed $check

The string to test

int $min

The minimal string length (in bytes)

Returns

bool

Success

money() public static 

money(mixed $check, mixed $symbolPosition)

Checks that a value is a monetary amount.

Parameters

mixed $check

Value to check

string $symbolPosition optional

Where symbol is located (left/right)

Returns

bool

Success

multiple() public static 

multiple(mixed $check, array $options, mixed $caseInsensitive)

Validates a multiple select. Comparison is case sensitive by default.

Valid Options

  • in => provide a list of choices that selections must be made from
  • max => maximum number of non-zero choices that can be made
  • min => minimum number of non-zero choices that can be made

Parameters

mixed $check

Value to check

array $options optional

Options for the check.

bool $caseInsensitive optional

Set to true for case insensitive comparison.

Returns

bool

Success

naturalNumber() public static 

naturalNumber(mixed $check, mixed $allowZero)

Checks if a value is a natural number.

Parameters

mixed $check

Value to check

bool $allowZero optional

Set true to allow zero, defaults to false

Returns

bool

Success

See Also

https://en.wikipedia.org/wiki/Natural_number

notAlphaNumeric() public static 

notAlphaNumeric(mixed $check)

Checks that a doesn't contain any alpha numeric characters

This method's definition of letters and integers includes unicode characters. Use notAsciiAlphaNumeric() if you want to exclude ascii only.

Parameters

mixed $check

Value to check

Returns

bool

Success

notAsciiAlphaNumeric() public static 

notAsciiAlphaNumeric(mixed $check)

Checks that a doesn't contain any non-ascii alpha numeric characters

Parameters

mixed $check

Value to check

Returns

bool

Success

notBlank() public static 

notBlank(mixed $check)

Checks that a string contains something other than whitespace

Returns true if string contains something other than whitespace

Parameters

mixed $check

Value to check

Returns

bool

Success

notEmpty() public static 

notEmpty(mixed $check)

Backwards compatibility wrapper for Validation::notBlank().

Parameters

string $check

Value to check.

Returns

bool

Success.

See Also

\Cake\Validation\Validation::notBlank()

numElements() public static 

numElements(mixed $check, mixed $operator, mixed $expectedCount)

Used to check the count of a given value of type array or Countable.

Parameters

mixed $check

The value to check the count on.

string $operator

Can be either a word or operand is greater >, is less <, greater or equal >= less or equal <=, is less <, equal to ==, not equal !=

int $expectedCount

The expected count value.

Returns

bool

Success

numeric() public static 

numeric(mixed $check)

Checks if a value is numeric.

Parameters

mixed $check

Value to check

Returns

bool

Success

range() public static 

range(mixed $check, mixed $lower, mixed $upper)

Validates that a number is in specified range.

If $lower and $upper are set, the range is inclusive. If they are not set, will return true if $check is a legal finite on this platform.

Parameters

string $check

Value to check

int|float|null $lower optional

Lower limit

int|float|null $upper optional

Upper limit

Returns

bool

Success

time() public static 

time(mixed $check)

Time validation, determines if the string passed is a valid time.

Validates time as 24hr (HH:MM) or am/pm ([H]H:MM[a|p]m) Does not allow/validate seconds.

Parameters

string|\DateTimeInterface $check

a valid time string/object

Returns

bool

Success

truthy() public static 

truthy(mixed $check, array $truthyValues)

Validates if given value is truthy.

The list of what is considered to be truthy values, may be set via $truthyValues.

Parameters

bool|int|string $check

Value to check.

array $truthyValues optional

List of valid truthy values, defaults to [true, 1, '1'].

Returns

bool

Success.

uploadError() public static 

uploadError(mixed $check, mixed $allowNoFile)

Checking for upload errors

Parameters

string|array|\Psr\Http\Message\UploadedFileInterface $check

Value to check.

bool $allowNoFile optional

Set to true to allow UPLOAD_ERR_NO_FILE as a pass.

Returns

bool

See Also

https://secure.php.net/manual/en/features.file-upload.errors.php

uploadedFile() public static 

uploadedFile(mixed $file, array $options)

Validate an uploaded file.

Helps join uploadError, fileSize and mimeType into one higher level validation method.

Options

  • types - An array of valid mime types. If empty all types will be accepted. The type will not be looked at, instead the file type will be checked with ext/finfo.
  • minSize - The minimum file size in bytes. Defaults to not checking.
  • maxSize - The maximum file size in bytes. Defaults to not checking.
  • optional - Whether or not this file is optional. Defaults to false. If true a missing file will pass the validator regardless of other constraints.

Parameters

mixed $file

The uploaded file data from PHP.

array $options optional

An array of options for the validation.

Returns

bool

url() public static 

url(mixed $check, mixed $strict)

Checks that a value is a valid URL according to https://www.w3.org/Addressing/URL/url-spec.txt

The regex checks for the following component parts:

  • a valid, optional, scheme
  • a valid ip address OR a valid domain name as defined by section 2.3.1 of https://www.ietf.org/rfc/rfc1035.txt with an optional port number
  • an optional valid path
  • an optional query string (get parameters)
  • an optional fragment (anchor tag) as defined in RFC 3986

Parameters

mixed $check

Value to check

bool $strict optional

Require URL to be prefixed by a valid scheme (one of http(s)/ftp(s)/file/news/gopher)

Returns

bool

Success

Links

https://tools.ietf.org/html/rfc3986

userDefined() public static 

userDefined(mixed $check, mixed $object, mixed $method, mixed $args)

Runs an user-defined validation.

Parameters

string|array $check

value that will be validated in user-defined methods.

object $object

class that holds validation method

string $method

class method name for validation to run

array|null $args optional

arguments to send to method

Returns

mixed

user-defined class class method returns

utf8() public static 

utf8(mixed $value, array $options)

Check that the input value is a utf8 string.

This method will reject all non-string values.

Options

  • extended - Disallow bytes higher within the basic multilingual plane. MySQL's older utf8 encoding type does not allow characters above the basic multilingual plane. Defaults to false.

Parameters

mixed $value

The value to check

array $options optional

An array of options. See above for the supported options.

Returns

bool

uuid() public static 

uuid(mixed $check)

Checks that a value is a valid UUID - https://tools.ietf.org/html/rfc4122

Parameters

mixed $check

Value to check

Returns

bool

Success

Property Detail

$_pattern protected static

Some complex patterns needed in multiple places

Type

array

$errors public static

Holds an array of errors messages set in this class.

These are used for debugging purposes

Type

array

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https://api.cakephp.org/3.9/class-Cake.Validation.Validation.html