在 foreach 循环内取消设置数组元素 [英] Unset an array element inside a foreach loop

问题描述

我在 foreach 循环中通过引用访问数组，但 unset() 函数似乎不起作用:

I'm accessing an array by reference inside a foreach loop, but the unset() function doesn't seem to be working:

foreach ( $this->result['list'] as &$row ) {
    if ($this_row_is_boring) {
        unset($row);
    }
}

print_r($this->result['list']); // Includes rows I thought I unset

想法?谢谢！

推荐答案

您正在取消设置引用(破坏引用).您需要根据键取消设置:

You're unsetting the reference (breaking the reference). You'd need to unset based on a key:

foreach ($this->result['list'] as $key => &$row) {
    if ($this_row_is_boring) {
        unset($this->result['list'][$key]);
    }
}

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