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                #### 從數組中刪除空白的元素(包括只有空白字符的元素) **代碼:** ~~~ function removeEmpty(& $arr, $trim = true) { foreach ( $arr as $key => $value ) { if (is_array ( $value )) { self::removeEmpty ( $arr [$key] ); } else { $value = trim ( $value ); if ($value == '') { unset ( $arr [$key] ); } elseif ($trim) { $arr [$key] = $value; } } } } ~~~ **調用:** ~~~ $arr = array('', 'test', ' '); removeEmpty($arr); print_r($arr); // 輸出結果中將只有 'test' ~~~
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