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    Difference between revisions of "PHP/stristr"

    < PHP
    imported>mutante
    m
    imported>mutante
    m
    Line 21: Line 21:
     
    // outputs ER@EXAMPLE.com
     
    // outputs ER@EXAMPLE.com
     
    ?>
     
    ?>
      +
    </pre>
     
       
     
    Example 2. Testing if a string is found or not
     
    Example 2. Testing if a string is found or not
      +
    <pre>
     
    <?php
     
    <?php
     
    $string = 'Hello World!';
     
    $string = 'Hello World!';
    Line 31: Line 32:
     
    // outputs: "earth" not found in string
     
    // outputs: "earth" not found in string
     
    ?>
     
    ?>
      +
    </pre>
     
     
    Example 3. Using a non "string" needle
     
    Example 3. Using a non "string" needle
      +
    <pre>
     
    <?php
     
    <?php
     
    $string = 'APPLE';
     
    $string = 'APPLE';
    Line 38: Line 40:
     
    // outputs: APPLE
     
    // outputs: APPLE
     
    ?>
     
    ?>
      +
    </pre>
       
    [[Category:PHP]]</pre>
    +
    [[Category:PHP]]

    Revision as of 12:01, 16 April 2006

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

    stristr --  Case-insensitive strstr()
    

    Description

    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.

    <?php
      $email = 'USER@EXAMPLE.com';
      echo stristr($email, 'e');
    // outputs ER@EXAMPLE.com
    ?> 
    

    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
    ?> 
    
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