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Check for string inside a string...

Discussion in 'PHP' started by envoy, Feb 21, 2006.

  1. #1
    Hey,
    SEMrush
    I need some help here. I need to check whether a string is present inside another string, and if it is then do whatever...

    So for example, I have a string of:
    "ACTIVE: string 0 & string 1 DEACTIVE:"
    I need to check that string and see if "string 0 & string 1" is inside it, because it could be different all the time, could just be "string 0" one time, "string 1" another time, or "string 0 & string 1" some other time. This may sound confusing, but hopefully someone get's the idea. If not, i can try and provide more information. Thanks.
     
    envoy, Feb 21, 2006 IP
    SEMrush
  2. tflight

    tflight Peon

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    #2
    Probably the easiest way to do it is with the strpos function. Example 1 at that URL is pretty much what you are looking to do.
     
    tflight, Feb 21, 2006 IP
  3. justinwp

    justinwp Peon

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    #3
    if (strpos($haystack,$needle)) { echo "Needle Found"; }

    strpos()
     
    justinwp, Feb 21, 2006 IP
  4. mad4

    mad4 Peon

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    #4
    $filestring="your text string";
    $findme  = 'some word';
    
    $pos = strpos($filestring, $findme);
    
    // Note the use of ===.  Simply == would not work as expected
    // because the position of 'a' was the 0th (first) character.
    if ($pos === false) {
       echo "The string '$findme' was not found in the url '$theurl'";
    } else {
       echo "The string '$findme' was found in the url '$theurl'";
       echo " and exists at position $pos";
    }
    PHP:
     
    mad4, Feb 22, 2006 IP
  5. vitnuce

    vitnuce Peon

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    #5
    vitnuce, Mar 21, 2010 IP