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    < PHP

    A PHP function to compare strings case-insensitive. Also see strstr.

    stristr --  Case-insensitive strstr()
    

    Description[edit]

    string stristr ( string haystack, string needle )
    

    Returns all of haystack from the first occurrence of needle to the end. needle and haystack are examined in a case-insensitive manner.

    If needle is not found, returns FALSE.

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

    <highlightSyntax> <?php

     $email = 'USER@EXAMPLE.com';
     echo stristr($email, 'e');
    

    // outputs ER@EXAMPLE.com ?> </highlightSyntax>

    Example 2. Testing if a string is found or not <highlightSyntax> <?php

     $string = 'Hello World!';
     if(stristr($string, 'earth') === FALSE) {
      echo '"earth" not found in string';
     }
    

    // outputs: "earth" not found in string ?> </highlightSyntax> Example 3. Using a non "string" needle <highlightSyntax> <?php

     $string = 'APPLE';
     echo stristr($string, 97); // 97 = lowercase a
    

    // outputs: APPLE ?> </highlightSyntax>

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