《PHP中将二维数组中相同的字段放在同一数组中》

PHP中将二维数组中相同的字段放在同一数组中

<?php

$a = array( 

    0 =>array("student_id" => "1515925710", "name" => "test_1", "phone" =>"13213791811", "extension_number" => "15261", ), 

    1 =>array("student_id" => "1515925711", "name" => "test_2", "phone" =>"13213791811", "extension_number" => "66002", ), 

    14=>array("student_id" => "1515925712", "name" => "test_3", "phone"=> "13213791811", "extension_number" => "56431", ), 

    2 =>array("student_id" => "1515925713", "name" => "test_4", "phone" => "13213791811","extension_number" => "54876", ), 

    3 =>array("student_id" => "1515925714", "name" => "test_5", "phone" =>"13213791811", "extension_number" => "07143", ), 

    13=>array("student_id" => "1515925715", "name" => "test_6", "phone"=> "13213791811", "extension_number" => "96949", ), 

    4 =>array("student_id" => "1515925716", "name" => "test_7", "phone" =>"13213791811", "extension_number" => "94755", ), 

    5 =>array("student_id" => "1515925717", "name" => "test_8", "phone" =>"13213791811", "extension_number" => "14171", ), 

    6 =>array("student_id" => "1515925718", "name" => "test_9", "phone" =>"13213791811", "extension_number" => "54876", ), 

    7 =>array("student_id" => "1515925719", "name" => "test_10", "phone" =>"13213791811", "extension_number" => "31354",), 

    8 =>array("student_id" => "1515925720", "name" => "test_11", "phone" =>"13213791811", "extension_number" => "66810", ), 

    9 =>array("student_id" => "1515925721", "name" => "test_12", "phone" =>"13213791811", "extension_number" => "34868", ), 

    10=>array("student_id" => "1515925722", "name" => "test_13", "phone"=> "13213791811", "extension_number" => "79523", ), 

    11=>array("student_id" => "1515925723", "name" => "test_14", "phone"=> "13213791811", "extension_number" => "59438", ), 

    12=>array("student_id" => "1515925724", "name" => "test_15", "phone"=> "13213791811", "extension_number" => "14780", ) 

); 

echo "未进行按字段将数组中的数据分开前";

print_r($a);

echo "按字段分开后";

$arr=array();

foreach ($a as $nodeIndex ){

   $arr["student_id"][]=$nodeIndex["student_id"];

   $arr["name"][]=$nodeIndex["name"];

   $arr["phone"][]=$nodeIndex["phone"];

   $arr["extension_number"][]=$nodeIndex["extension_number"];

   $arr["extension_number"][]=$nodeIndex["extension_number"];

}

print_r($arr);

?>