php常用数组array函数实例总结【赋值,拆分,合并,计算,添加,删除

本文实例总结了php常用数组array函数。分享给大家供大家参考，具体如下：

array_combine

功能：用一个数组的值作为新数组的键名，另一个数组的值作为新数组的值

案例：

<?php$a = array("one","two","three");$b = array("一","二","三");$c = array_combine($a,$b);print_r($c);/**结果*Array ( [one] => 一 [two] => 二 [three] => 三 )*/

array_chunk

功能：拆分数组成多个数组

<?php$input_array = array("a"=>"apple","b"=>"blue","c","d","e");echo "<pre>";print_r(array_chunk($input_array, 2));print_r(array_chunk($input_array, 2,True));echo "</pre>";/**结果Array( [0] => Array  (   [0] => apple   [1] => blue  ) [1] => Array  (   [0] => c   [1] => d  ) [2] => Array  (   [0] => e  ))Array( [0] => Array  (   [a] => apple   [b] => blue  ) [1] => Array  (   [0] => c   [1] => d  ) [2] => Array  (   [2] => e  ))*/

array_count_values

功能：统计数组中值出现的次数

<?php$input_array = array("a"=>"apple","b"=>"blue","c","d","e");echo "<pre>";print_r(array_count_values($input_array));echo "</pre>";/**结果Array( [apple] => 1 [blue] => 1 [c] => 1 [d] => 1 [e] => 1)*/

array_diff

功能：第一个数组中去掉第二个数组中有的数据，返回剩下的内容作为结果

<?php$array1 = array("a"=>"apple","b"=>"blue","c","d","e");$array2 = array("apple","c","d","f");$result = array_diff($array1, $array2);$result2 = array_diff($array2, $array1);echo "<pre>";print_r($result);//数组1中去掉数组2中剩下的print_r($result2);//数组2中去掉数组1中剩下的echo "</pre>";/**结果Array( [b] => blue [2] => e)Array( [3] => f)*/

array_map

功能：将回调函数执行到数组中

<?php//定义回调函数function cube($n){ return ($n*$n*$n);}$a = array(1,2,3,4,5);$b = array_map("cube",$a);echo "<pre>";print_r($b);echo "</pre>";/**结果Array( [0] => 1 [1] => 8 [2] => 27 [3] => 64 [4] => 125)*/

array_merge

功能：合并一个或多个数组

说明：如果后面有键名相同的会覆盖掉前面的内容，键名为数字的会添加到后面

<?php$array1 = array("color"=>"red",2,4);$array2 = array("a","b","color"=>"green","shape"=>"trapezoid",4);$result1 = array_merge($array1,$array2);$result2 = array_merge_recursive($array1,$array2);echo "<pre>";print_r($result1);print_r($result2);echo "</pre>";/**结果Array( [color] => green [0] => 2 [1] => 4 [2] => a [3] => b [shape] => trapezoid [4] => 4)Array( [color] => Array  (   [0] => red   [1] => green  ) [0] => 2 [1] => 4 [2] => a [3] => b [shape] => trapezoid [4] => 4)*/