如何从PHP中的关联数组中删除二级索引

问题描述：

print_r($unique_id);

Array
(
    [0] => Array
        (
            [LeadEmailDetail] => Array
                (
                    [id] => 97
                    [email] => vikastyagismartbuzz8@gmail.com
                )
        )

    [1] => Array
        (
            [LeadEmailDetail] => Array
                (
                    [id] => 93
                    [email] => vikastyagi87@gmail.com
                )
        )

    [2] => Array
        (
            [LeadEmailDetail] => Array
                (
                    [id] => 94
                    [email] => vikastyagismartbuzz9@gmail.com
                )
        )

)

But i want like that

Array
(
    [0] => Array
        (
            [id] => 97
            [email] => vikastyagismartbuzz8@gmail.com
        )

    [1] => Array
        (
            [id] => 93
            [email] => vikastyagi87@gmail.com
        )

    [2] => Array
        (
            [id] => 94
            [email] => vikastyagismartbuzz9@gmail.com
        )

)

print_r（$ unique_id）; p>

  Array 
（  
 [0] =＆gt;数组
（
 [LeadEmailDetail] =＆gt;数组
（
 [id] =＆gt; 97 
 [email] =＆gt; vikastyagismartbuzz8@gmail.com 
）\  n）
 
 [1] =＆gt;数组
（
 [LeadEmailDetail] =＆gt;数组
（
 [id] =＆gt; 93 
 [email] =＆gt; vikastyagi87@gmail.com  
）
）
 
 [2] =＆gt;数组
（
 [LeadEmailDetail] =＆gt;数组
（
 [id] =＆gt; 94 
 [email] =＆gt; vikastyagismartbuzz9  @ gmail.com 
）
）
 
）
  code>  pre> 
 
 但我想要那样 p> 
 
 
 数组
（
 [0] =＆gt;数组
（
 [id] =＆gt; 97 
 [email] =＆gt; vikastyagismartbuzz8@gmail.com 
）
 
 [1] =  ＆gt;数组
  （
 [id] =＆gt;  93 
 [email] =＆gt;  vikastyagi87@gmail.com 
）
 
 [2] =＆gt; 数组
（
 [id] =＆gt; 94 
 [email] =＆gt; vikastyagismartbuzz9@gmail.com 
）
 
）
   code>  pre> 
  div>

答

Try this:

array_map('array_shift', $unique_id);

答

Who build the $unique_id array? I would recommend to build it in the form you like

To solve your question ... out of the box quick and dirty

<?php
    $new = array();
    foreach($unique_id as $arr) {
       foreach ($arr['LeadEmailDetail'] as $a) {
         $new[] = $a;
       }
    }
    print_r($new);

答

try this

foreach($unique_id as $k => $v)
{
    $array[] = array_shift($v);
}

答

Simple loop does a job for you:

foreach ($array as &$v) {
    $v = current($v);
}
unset($v);

demo

_{p.s. doesn't create another array (memory leak) like other examples.}

答

print_r( array_column( $unique_id, 'LeadEmailDetail' ) );

Requires PHP >= 5.5.0

如何从PHP中的关联数组中删除二级索引

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