dongyong3590 2012-01-21 17:51
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在PHP中删除foreach循环中的项目[重复]

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I have a foreach loop where I want to unset an item from an array if certain conditions are met, like this:

foreach ($array as $element) {
    if (conditions) {
        unset($element);
    }
}

But the element is not unset after that. What am I doing wrong? Am I unsetting a reference to the actual element or something like that?

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  • douke3007 2012-01-21 17:53
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    Simple Solution, unset the element by it's index:

    foreach ($array as $key => $element) {
        if (conditions) {
            unset($array[$key]);
        }
    }
    

    Just unsetting $element will not work, because this variable is not a reference to the arrays element, but a copy. Accordingly changing the value of $element will not change the array too.

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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