php二维数组如何转化成一维数组

可以使用PHP的array_merge()函数将二维数组转化为一维数组。具体操作如下：

$twoDimensionalArray = array( array('apple', 'banana'), array('orange', 'grape'), array('melon', 'watermelon') ); $oneDimensionalArray = array(); foreach ($twoDimensionalArray as $subArray) { $oneDimensionalArray = array_merge($oneDimensionalArray, $subArray); } print_r($oneDimensionalArray); 

输出结果为：

Array ( [0] => apple [1] => banana [2] => orange [3] => grape [4] => melon [5] => watermelon )