PHP determines the number of dimensions of an array

php method to determine how many dimensions an array is: first obtain the array that needs to be determined; then use the custom "aL" method to determine how many dimensions the array is; finally use the "max($al)" method Just get the dimensions of the array.

##PHP Gets the number of dimensions of an array

PHP Tutorial"

// 判断数组是几维数组 $data = array(); // 是你要判断的数组 $al = array(0); function aL($data,&$al,$level=0){ if(is_array( $data )){ $level++; $al[] = $level; foreach($data as $v){ aL($v,$al,$level); } } } aL($data,$al); $num_level = max($al); // $num_level 就是你要获取的数组的维度

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