时间:2021-07-01 10:21:17 帮助过:23人阅读
$arr = array( '0'=>array( 'name'=>'james', 'age'=>30, ), '1'=>array( 'name'=>'susu', 'age'=>26, ), '2'=>array( 'name'=>'james', 'age'=>30, ), 'new'=>array( 'name'=>'kube', 'age'=>37, ), 'list'=>array( 'name'=>'kube', 'age'=>27, ), );
1、 二维数组内部的一维数组中的值不能完全相同,删除其中重复的项:
代码如下:
array( 'name'=>'james', 'age'=>30, ), '1'=>array( 'name'=>'susu', 'age'=>26, ), '2'=>array( 'name'=>'james', 'age'=>30, ), 'new'=>array( 'name'=>'kube', 'age'=>37, ), 'list'=>array( 'name'=>'kube', 'age'=>27, ), );printf("Before tranform the array:输出原来的数组print_r($arr);echo "
"); //
输出结果:
Before tranform the array: //原来数组
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 ) )
After split the array: //拆分后数组
Array ( [0] => james,30 [1] => susu,26 [2] => james,30 [new] =>kube,37 [list] => kube,27 )
Duplicate removal of thearray: //去重后数组
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 ) )
2、 二维数组内部的一维数组因某一个键值不能相同,删除重复项:
/*针对某一个键值来进行去重*/
$v) { if(in_array($v[$key], $tmp_arr)) //搜索$v[$key]是否在$tmp_arr数组中存在,若存在返回true { unset($arr[$k]); //销毁一个变量 如果$tmp_arr中已存在相同的值就删除该值 } else { $tmp_arr[$k] = $v[$key]; //将不同的值放在该数组中保存 } } //ksort($arr); //ksort函数对数组进行排序(保留原键值key) sort为不保留key值 return $arr; } $key ='name'; $arr_key = second_array_unique_bykey($arr,$key); printf("As for the givenkey->%s:
",$key); print_r($arr_key); echo "
";?>
输出结果:
As for the given key->name:
Array ( [0] => Array ( [name] => james [age] => 30 ) [1] => Array ([name] => susu [age] => 26 ) [new] => Array ( [name] => kube [age]=> 37 ) )
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