PHP让数组中有相同值的组成新的数组实例
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2022-09-02 13:07:07
实例如下所示:
$arr = array(
0=>array('key1'=>'value1' , 'key2'=>'value2'),...
实例如下所示:
$arr = array( 0=>array('key1'=>'value1' , 'key2'=>'value2'), 1=>array('key1'=>'value1' , 'key2'=>'value3'), 2=>array('key1'=>'value2' , 'key2'=>'value4'), 999=>array('key1'=>'value2' , 'key2'=>'value5') ); $result = array(); <span style="color:#ff0000;">foreach ($arr as $data) { isset($result[$data['key1']]) || $result[$data['key1']] = array(); $result[$data['key1']][] = $data['key2']; }</span> ksort($cityar, sort_natural);//这个是键值按字母先后顺序排列 print_r($result); //输出如下 array ( [value1] => array ( [0] => value2 [1] => value3 ) [value2] => array ( [0] => value4 [1] => value5 ) )
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