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php怎么去除重复值？
(资料图)
php去除数组中重复值,并返回结果!
array_unique(array) 只能处理value只有单个的数组。
去除有多个value数组，可以使用如下函数实现：
function more_array_unique($arr=array()){ foreach($arr[0] as $k => $v){ $arr_inner_key[]= $k; //先把二维数组中的内层数组的键值记录在在一维数组中 } foreach ($arr as $k => $v){ $v =join(",",$v); //降维 用implode()也行 $temp[$k] =$v; //保留原来的键值 $temp[]即为不保留原来键值 } $temp =array_unique($temp); //去重：去掉重复的字符串 foreach ($temp as $k => $v){ $a = explode(",",$v); //拆分后的重组 如：Array( [0] => james [1] => 30 ) $arr_after[$k]= array_combine($arr_inner_key,$a); //将原来的键与值重新合并 } return $arr_after; }有如下数组：
$arr = array( "0"=>array( "name"=>"james", "age"=>30, ), "1"=>array( "name"=>"susu", "age"=>26, ), "2"=>array( "name"=>"james", "age"=>30, ), "new"=>array( "name"=>"kube", "age"=>37, ), "list"=>array( "name"=>"kube", "age"=>27, ), "435"=>array( "name"=>"susu", "age"=>26, ), "33"=>array( "name"=>"james", "age"=>30, ), );
调用函数后显示：
Array( [0] => Array ( [name] => james [age] => 30 ) [1] => Array ( [name] => susu [age] => 26 ) [new] => Array ( [name] => kube [age] => 37 ) [list] => Array ( [name] => kube [age] => 27 ))
测试Demo如下：
<?php $arr = array( "0"=>array( "name"=>"james", "age"=>30, ), "1"=>array( "name"=>"susu", "age"=>26, ), "2"=>array( "name"=>"james", "age"=>30, ), "new"=>array( "name"=>"kube", "age"=>37, ), "list"=>array( "name"=>"kube", "age"=>27, ), "435"=>array( "name"=>"susu", "age"=>26, ), "33"=>array( "name"=>"james", "age"=>30, ), ); printf("原来的数组:<br><pre>"); //输出原来的数组 print_r($arr); echo "</pre><br/>"; function more_array_unique($arr=array()){ foreach($arr[0] as $k => $v){ $arr_inner_key[]= $k; //先把二维数组中的内层数组的键值记录在在一维数组中 } foreach ($arr as $k => $v){ $v =join(",",$v); //降维 用implode()也行 $temp[$k] =$v; //保留原来的键值 $temp[]即为不保留原来键值 } $temp =array_unique($temp); //去重：去掉重复的字符串 foreach ($temp as $k => $v){ $a = explode(",",$v); //拆分后的重组 如：Array( [0] => james [1] => 30 ) $arr_after[$k]= array_combine($arr_inner_key,$a); //将原来的键与值重新合并 } return $arr_after; } $arr_new = more_array_unique($arr); //调用去重函数 printf("去除重复元素后的数组:<br>"); echo "<pre>"; print_r($arr_new); echo "</pre><br/>"; ?>推荐学习：《PHP视频教程》
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