array_search(3) [php man page]

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)

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STRISTR(3)								 1								STRISTR(3)

stristr - Case-insensitivestrstr(3)

SYNOPSIS

       string stristr (string  $haystack, mixed  $needle, [bool  $before_needle = false])

DESCRIPTION

	Returns all of $haystack starting from and including the first occurrence of $needle to the end.

PARAMETERS

	      o $haystack
		- The string to search in

	      o $needle
		- If $needle is not a string, it is converted to an integer and applied as the ordinal value of a character.

	      o $before_needle
		- If TRUE, stristr(3) returns the part of the $haystack before the first occurrence of the $needle (excluding needle).

       $needle and $haystack are examined in a case-insensitive manner.

RETURN VALUES

	Returns the matched substring. If $needle is not found, returns FALSE.

CHANGELOG

       +--------+-----------------------------------------------+
       |Version |						|
       |	|						|
       |	|		   Description			|
       |	|						|
       +--------+-----------------------------------------------+
       | 5.3.0	|						|
       |	|						|
       |	|  Added the optional parameter $before_needle. |
       |	|						|
       | 4.3.0	|						|
       |	|						|
       |	|	stristr(3) was made binary safe.	|
       |	|						|
       +--------+-----------------------------------------------+
EXAMPLES

       Example #1

	      stristr(3) example

	      <?php
		$email = 'USER@EXAMPLE.com';
		echo stristr($email, 'e'); // outputs ER@EXAMPLE.com
		echo stristr($email, 'e', true); // As of PHP 5.3.0, outputs US
	      ?>

       Example #2

	      Testing if a string is found or not

	      <?php
		$string = 'Hello World!';
		if(stristr($string, 'earth') === FALSE) {
		  echo '"earth" not found in string';
		}
	      // outputs: "earth" not found in string
	      ?>

       Example #3

	      Using a non "string" needle

	      <?php
		$string = 'APPLE';
		echo stristr($string, 97); // 97 = lowercase a
	      // outputs: APPLE
	      ?>

NOTES

       Note

	      This function is binary-safe.

SEE ALSO

       strstr(3), strrchr(3), stripos(3), strpbrk(3), preg_match(3).

PHP Documentation Group 														STRISTR(3)

Linux and UNIX Man Pages

array_search(3) [php man page]

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