break out of if and foreach

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鱼传尺愫
鱼传尺愫 2020-11-30 17:43

I have a foreach loop and an if statement. If a match is found i need to ultimately break out of the foreach.

foreach ($equipxml as $equip) {

    $current_de         


        
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  •  予麋鹿
    予麋鹿 (楼主)
    2020-11-30 18:26

    if is not a loop structure, so you cannot "break out of it".

    You can, however, break out of the foreach by simply calling break. In your example it has the desired effect:

    $device = "wanted";
    foreach($equipxml as $equip) {
        $current_device = $equip->xpath("name");
        if ( $current_device[0] == $device ) {
            // found a match in the file            
            $nodeid = $equip->id;
    
            // will leave the foreach loop and also the if statement
            break;
            some_function(); // never reached!
        }
        another_function();  // not executed after match/break
    }
    

    Just for completeness for others that stumble upon this question looking for an answer..

    break takes an optional argument, which defines how many loop structures it should break. Example:

    foreach (array('1','2','3') as $a) {
        echo "$a ";
        foreach (array('3','2','1') as $b) {
            echo "$b ";
            if ($a == $b) { 
                break 2;  // this will break both foreach loops
            }
        }
        echo ". ";  // never reached!
    }
    echo "!";
    

    Resulting output:

    1 3 2 1 !

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