function color_valid_hexadecimal_string
color_valid_hexadecimal_string($color)
Determines if a hexadecimal CSS color string is valid.
Parameters
$color: The string to check.
Return value
TRUE if the string is a valid hexadecimal CSS color string, or FALSE if it isn't.
File
- modules/color/color.module, line 340
- Allows users to change the color scheme of themes.
Code
function color_valid_hexadecimal_string($color) { return preg_match('/^#([a-f0-9]{3}){1,2}$/iD', $color); }
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https://api.drupal.org/api/drupal/modules!color!color.module/function/color_valid_hexadecimal_string/7.x