php按指定元素值去除数组元素的实现方法

<?php 
    //去除值为"Cat"的元素 
    $a=array("a"=>"Dog","b"=>"Cat","c"=>"Horse"); 
    print_r($a); 
    unset($a[array_search("Cat",$a)]);//array_search("Cat",$a)按元素值返回键名。去除后保持索引 
    print_r($a); 
    
    //或
    $arr = array();
    foreach ($a as $key=>$value){
       if ($value != 'Cat') $arr[] = $value;
    }
    
    var_dump($arr);
    
?> 

显示结果

//去除前: 
Array ( 
    [a] => Dog 
    [b] => Cat 
    [c] => Horse 
) 

//去除后: 
Array ( 
    [a] => Dog 
    [c] => Horse 
)

标签: none

添加新评论