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    PHP/if switch: Difference between revisions

    < PHP
    Content added Content deleted
    imported>mutante
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    imported>mutante
    mNo edit summary
    Line 3: Line 3:
    === if / elseif ===
    === if / elseif ===


    <pre>
    if ($fnord == 23) {
    if ($fnord == 23) {
    echo "Found a 23!";
    echo "Found a 23!";
    Line 12: Line 13:
    echo "Nothing special";
    echo "Nothing special";
    }
    }
    </pre>


    * http://www.php.net/manual/en/control-structures.elseif.php


    OR you can do the same like this
    OR you can do the same like this
    Line 18: Line 21:
    === switch / case ===
    === switch / case ===


    <pre>
    switch ($fnord) {
    switch ($fnord) {
    case 23:
    case 23:
    Line 31: Line 35:
    echo "Nothing special";
    echo "Nothing special";
    }
    }
    </pre>

    * http://www.php.net/switch


    [http://www.php.net/switch read here why you need the "break"]
    [http://www.php.net/switch read here why you need the "break"]

    Revision as of 12:38, 8 March 2006

    If you want to compare one variable to multiple values in PHP, you can do so 2 different ways:

    if / elseif

    if ($fnord == 23) {
       echo "Found a 23!";
    } elseif ($fnord == 17) {
       echo "Found a 17!";
    } elseif ($fnord == "Foobar") {
       echo "Fnord is a string!";
    } else {
       echo "Nothing special";
    }
    

    OR you can do the same like this

    switch / case

    switch ($fnord) {
    case 23:
       echo "Found a 23!";
       break;
    case 17:
       echo "Found a 17!";
       break;
    case "Foobar":
       echo "Fnord is a string!";
       break;
    default:
       echo "Nothing special";
    }
    

    read here why you need the "break"


    Which is Faster ?

    Now, you might wonder, which is "better" to use?


    Look at this Benchmark provided by Shai-Tan comparing them.

    It turns out that the difference is almost not noticable but switch is a tiny bit faster.

    <@Shai-Tan> mutante: 0.00011 <@Shai-Tan> mutante: a moral victory at best

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