Share example code with PHP three-dimensional array de-weight

PHP three-dimensional array de-weight

This article introduces the method of PHP three-dimensional array de-weight, sharing a simple example.

If, there is an array $my _array;

Example:

<?php//creates a new empty array. $tmp _array = Array (), $new _array = Array ();//1. Loops out all the rows. ($val is a row) foreach ($my _array as $k = = $val) {    $hash = MD5 (Json_encode ($val));    if (In_array ($hash, $tmp _array)) {        echo (' This line has already been ');    } else{//www.jbxue.com        //2. In the body of the Foreach loop, the hash of each array object is assigned to that temporary array.        $tmp _array[] = $hash;        $new _array[] = $val;    }} Print_r ($new _array);//$new _array is a filtered array with no duplicate data.