POMO_Reader::substr( string $string, int $start, int $length )

Parameters

$string

(string) (Required)

$start

(int) (Required)

$length

(int) (Required)

Return

(string)

Source

File: wp-includes/pomo/streams.php 

function substr( $string, $start, $length ) {
			if ( $this->is_overloaded ) {
				return mb_substr( $string, $start, $length, 'ascii' );
			} else {
				return substr( $string, $start, $length );
			}
		}

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Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/classes/pomo_reader/substr