Small example of php array de-weight

function Assoc_unique ($arr, $key) { $tmp _arr = Array (); foreach ($arr as $k = = $v) { if (In_array ($v [$key], $tmp _arr)) { Unset ($arr [$k]); } else { $tmp _arr[] = $v [$key]; } } Sort ($arr); return $arr; } $AA = Array ( Array (' id ' = = 123, ' name ' = ' Zhang San '), Array (' id ' = = 123, ' name ' = ' John Doe '), Array (' id ' = = 124, ' name ' = ' Harry '), Array (' id ' = ' = ', ' name ' = ' Zhao Liu '), Array (' id ' = = 126, ' name ' = ' Zhao Liu ') ); $key = ' name '; Assoc_unique (& $aa, $key); Print_r ($AA); ?> Copy Code you may be interested in the article:PHP to create an array of methods introduced PHP using Array_unique to determine if the array has the same value in the PHP array and a small example of the loop PHP in a multidimensional array to find the method of the specific value of the enhanced version of Array_ Unique function (supports two-dimensional arrays) Learn PHP ordering of multidimensional arrays PHP Array callback filter function Array_filter () Examples of applications PHP extracts variables from an array of functions and application instances PHP code that sorts a multidimensional array by a value randomly extracts some elements of PHP code from the array

