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Home Backend Development PHP Tutorial 求教 多维数组中删除空记录

求教 多维数组中删除空记录

Jun 23, 2016 pm 01:38 PM




想让空记录都删除掉,而且删除后,有的key不在了,要把key的顺利也重新排列
比如删除了 $arr['0']  $arr['3']   $arr['5']   ,那么整理后的可以是 $arr['0'] $arr['1'] $arr['2'] $arr['3'] $arr['4']$arr['5'].。。。。
当然图片是二维数组,就是想让删除后,后续的key顺序也跟上来


用过网上的方法都不好使
function array_no_empty($arr) {
if (is_array($arr)) {
foreach ( $arr as $k => $v ) {
if (empty($v)) unset($arr[$k]);
elseif (is_array($v)) {
$arr[$k] = array_no_empty($v);
}
}
}
return $arr;
}

这个是没用对吗? 老是说中间的  array_no_empty 未定义 什么的

有没有另外的方法 ,谢谢了


回复讨论(解决方案)

你的 array_no_empty 函数是可用的
但是有毛病:会返回空的成员数组

$a = array(  array('a' => 0, 'b'=> ''),  array('a' => 0, 'b'=> ''),  array('a' => 1, 'b'=> '2'),);print_r(array_values(array_no_empty($a)));function array_no_empty($arr) {  if (is_array($arr)) {    foreach ( $arr as $k => $v ) {      if (empty($v)) unset($arr[$k]);      elseif (is_array($v)) {        $arr[$k] = array_no_empty($v);      }    }  }  return $arr;}
Copy after login
Array(    [0] => Array        (        )    [1] => Array        (        )    [2] => Array        (            [a] => 1            [b] => 2        ))
Copy after login

修改了一下
$a = array(  array('a' => 0, 'b'=> ''),  array('a' => 0, 'b'=> ''),  array('a' => 1, 'b'=> '2'),);print_r(array_no_empty($a));function array_no_empty($arr) {  if (is_array($arr)) {    foreach ( $arr as $k => $v ) {      if (empty($v)) unset($arr[$k]);      elseif (is_array($v)) {        $t = array_no_empty($v);        if($t) $arr[$k] = $t;        else unset($arr[$k]);      }    }  }  return $arr;}
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Array(    [2] => Array        (            [a] => 1            [b] => 2        ))
Copy after login

重排下标可用 array_values 函数
$a = array(  array('a' => 0, 'b'=> ''),  array('a' => 0, 'b'=> ''),  array('a' => 1, 'b'=> '2'),);print_r(array_values(array_no_empty($a)));function array_no_empty($arr) {  if (is_array($arr)) {    foreach ( $arr as $k => $v ) {      if (empty($v)) unset($arr[$k]);      elseif (is_array($v)) {        $t = array_no_empty($v);        if($t) $arr[$k] = $t;        else unset($arr[$k]);      }    }  }  return $arr;}
Copy after login
Array(    [0] => Array        (            [a] => 1            [b] => 2        ))
Copy after login

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