substr_count(3) [php man page]

SUBSTR_COUNT(3) 							 1							   SUBSTR_COUNT(3)

substr_count - Count the number of substring occurrences

SYNOPSIS

       int substr_count (string  $haystack, string  $needle, [int  $offset], [int  $length])

DESCRIPTION

       substr_count(3)	returns  the number of times the $needle substring occurs in the $haystack string. Please note that $needle is case sensi-
       tive.

       Note

	       This function doesn't count overlapped substrings. See the example below!

PARAMETERS

	      o $haystack
		- The string to search in

	      o $needle
		- The substring to search for

	      o $offset
		- The offset where to start counting

	      o $length
		- The maximum length after the specified offset to search for the substring. It outputs a warning if the offset plus the length is
		greater than the $haystack length.

RETURN VALUES

	This function returns an integer.

CHANGELOG

       +--------+-----------------------------------------------+
       |Version |						|
       |	|						|
       |	|		   Description			|
       |	|						|
       +--------+-----------------------------------------------+
       | 5.1.0	|						|
       |	|						|
       |	|  Added the $offset and the $length parameters |
       |	|						|
       +--------+-----------------------------------------------+
EXAMPLES

       Example #1

	      A substr_count(3) example

	      <?php
	      $text = 'This is a test';
	      echo strlen($text); // 14

	      echo substr_count($text, 'is'); // 2

	      // the string is reduced to 's is a test', so it prints 1
	      echo substr_count($text, 'is', 3);

	      // the text is reduced to 's i', so it prints 0
	      echo substr_count($text, 'is', 3, 3);

	      // generates a warning because 5+10 > 14
	      echo substr_count($text, 'is', 5, 10);

	      // prints only 1, because it doesn't count overlapped substrings
	      $text2 = 'gcdgcdgcd';
	      echo substr_count($text2, 'gcdgcd');
	      ?>

SEE ALSO

       count_chars(3), strpos(3), substr(3), strstr(3).

PHP Documentation Group 													   SUBSTR_COUNT(3)

ARRAY_SEARCH(3) 							 1							   ARRAY_SEARCH(3)

array_search - Searches the array for a given value and returns the corresponding key if successful

SYNOPSIS

       mixed array_search (mixed  $needle, array  $haystack, [bool  $strict = false])

DESCRIPTION

	Searches $haystack for $needle.

PARAMETERS

	      o $needle
		- The searched value.

	      Note

		      If $needle is a string, the comparison is done in a case-sensitive manner.

	      o $haystack
		- The array.

	      o $strict
		-  If  the  third  parameter  $strict  is  set to TRUE then the array_search(3) function will search for identical elements in the
		$haystack. This means it will also check the types of the $needle in the $haystack, and objects must be the same instance.

RETURN VALUES

	Returns the key for $needle if it is found in the array, FALSE otherwise.

	If $needle is found in $haystack more than once, the first matching key is returned. To return the  keys  for  all  matching  values,  use
       array_keys(3) with the optional $search_value parameter instead.

       Warning

	      This function may return Boolean FALSE, but may also return a non-Boolean value which evaluates to FALSE. Please read the section on
	      Booleans for more information. Use the === operator for testing the return value of this function.

CHANGELOG

       +--------+---------------------------------------------------+
       |Version |						    |
       |	|						    |
       |	|		     Description		    |
       |	|						    |
       +--------+---------------------------------------------------+
       | 5.3.0	|						    |
       |	|						    |
       |	|  As with all internal PHP functions as of  5.3.0, |
       |	| array_search(3)  returns  NULL if invalid parame- |
       |	| ters are passed to it.			    |
       |	|						    |
       | 4.2.0	|						    |
       |	|						    |
       |	|  Prior to PHP 4.2.0, array_search(3) returns NULL |
       |	| on failure instead of FALSE.			    |
       |	|						    |
       +--------+---------------------------------------------------+
EXAMPLES

       Example #1

	      array_search(3) example

	      <?php
	      $array = array(0 => 'blue', 1 => 'red', 2 => 'green', 3 => 'red');

	      $key = array_search('green', $array); // $key = 2;
	      $key = array_search('red', $array);   // $key = 1;
	      ?>

SEE ALSO

       array_keys(3), array_values(3), array_key_exists(3), in_array(3).

PHP Documentation Group 													   ARRAY_SEARCH(3)