Question

php中如何剔除数组中的重复元素

比如说现在有一个数组
Array ( [0] => [1] => beijing [2] => shanghai [3] => beijing [4] => shanghai [5] => guangzhou [6] => shanghai [7] => beijing [8] => guangzhou )

我希望相同的只保留一个 重新生成一个数组
该如何写

Answer 1

试一下这个。楼主求采纳....

Answer 2

<?php
$array = array(
'beijing',
'shanghai',
'beijing',
'beijing',
'shanghai',
'guangzhou',
);

$array = array_flip(array_flip($array));

// sort($array); //如果还有排序用这个，否则重复值取最后一个的下标。
var_dump($array);
//End_php

Answer 3

PHP 有提供这样的函数：array_unique();

$a = array("a"=>"Cat","b"=>"Dog","c"=>"Cat");
$a = array_unique($a);

Answer 4

$b = array();
$c=array();
$a = array("1"=>"a", "2"=>"b", "3"=>"b");
foreach($a as $key=>$value){
$b[$value] = $value;
}
$i=0;
foreach($b as $key=>$value){
$c[$i++] = $value;
}

var_dump($c);

Answer 5

2楼说的对