php man page for grapheme_strstr

GRAPHEME_STRSTR(3)							 1							GRAPHEME_STRSTR(3)

grapheme_strstr - Returns part of haystack string from the first occurrence of needle to the end of haystack.

       Procedural style

SYNOPSIS
       string grapheme_strstr (string  $haystack, string  $needle, [bool  $before_needle = false])

DESCRIPTION
	Returns part of haystack string from the first occurrence of needle to the end of haystack (including the needle).

PARAMETERS
	      o $haystack
		- The input string. Must be valid UTF-8.

	      o $needle
		- The string to look for. Must be valid UTF-8.

	      o $before_needle
		- If TRUE, grapheme_strstr() returns the part of the haystack before the first occurrence of the needle (excluding the needle).

RETURN VALUES
	Returns the portion of string, or FALSE if needle is not found.

EXAMPLES
       Example #1

	      grapheme_strstr(3) example

	      <?php

	      $char_a_ring_nfd = "axCCx8A";  // 'LATIN SMALL LETTER A WITH RING ABOVE' (U+00E5) normalization form "D"
	      $char_o_diaeresis_nfd = "oxCCx88"; // 'LATIN SMALL LETTER O WITH DIAERESIS' (U+00F6) normalization form "D"

	      print urlencode(grapheme_stristr( $char_a_ring_nfd . $char_o_diaeresis_nfd . $char_a_ring_nfd, $char_o_diaeresis_nfd));

	      ?>

       The above example will output:

       o%CC%88a%CC%8A

SEE ALSO
       grapheme_stristr(3),  grapheme_stripos(3),  grapheme_strpos(3),	grapheme_strripos(3),  grapheme_strrpos(3),   Unicode  Text  Segmentation:
       Grapheme Cluster Boundaries .

PHP Documentation Group 													GRAPHEME_STRSTR(3)