Question

PHP如何从数据里取出同一索引的所有值？

比如说:
$ar = array('0'=>array("sugar"=>"小淘气","salt"=>"粗盐"),'1'=>array("sugar"=>"汽水糖","salt"=>"精盐"));
我想取出所有的sugar里的值，即小淘气和汽水糖，有现成的函数吗？

Answer 1

<?
$ar = array('0'=>array("sugar"=>"小淘气","salt"=>"粗盐"),'1'=>array("sugar"=>"汽水糖","salt"=>"精盐"));

echo $ar[0][sugar];
echo $ar[1][sugar];

?>

Answer 2

重新做一个数组？

<?php

$ar = array('0'=>array("sugar"=>"小淘气","salt"=>"粗盐"),'1'=>array("sugar"=>"汽水糖","salt"=>"精盐"));

$ar_new=array();

foreach($ar as $v){
$ar_new[] = $v["sugar"];
}

var_dump($ar_new);
?>