php-Arrays函数-array_unique-移除数组中重复的值
array_unique() 移除数组中重复的值
【功能】
该函数将返回以指定数组为基础的没有重复值的新数组,键名保持不变
该函数先将值作为字符串排序,然后对每个值只保留第一个遇到的键名,
接着忽略所有后面的键名
这并不意味着在未排序的数组中同值的第一个出现的键名被保留
【使用范围】
php4>=4.0.1、php5.
【使用】
mixed array_unique( array array )
array/必需/即将进行函数处理的原始数组
【示例】
[php]
$input=array('c'=>"green",'aed','b'=>'green','blue','bed');
var_dump(array_unique($input));
/*
array(4) {
["c"]=>
string(5) "green"
[0]=>
string(3) "aed"
[1]=>
string(4) "blue"
[2]=>
string(3) "bed"
}
*/
摘自 zuodefeng的笔记

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