<?php //去除值为"Green"的元素 $testarr=array("a"=>"Red","b"=>"Green","c"=>"Yellow"); print_r($testarr); unset($testarr[array_search("Green",$testarr)]);//array_search("Green",$testarr)按元素值返回键名。去除后保持索引 print_r($testarr); ?>
查看array_search用法
显示结果
去除前：
Array
(
[a]
=> Red
[b] => Greed
[c] =>
Yellow
)
去除后：
Array
(
[a]
=> Red
[c] => Yellow
)