Php 从数组中提取所需项
如果我有一个结构如下的数组:Php 从数组中提取所需项,php,filtering,Php,Filtering,如果我有一个结构如下的数组: [0] => bad [1] => good [2] => bad [3] => bad [4] => good [5] => bad [6] => bad [7] => good [8] => bad [9] => bad [10] => good [11] => bad 我需要一个只包含好项目的数组,如: [0] => good [1] => good [2] => go
[0] => bad
[1] => good
[2] => bad
[3] => bad
[4] => good
[5] => bad
[6] => bad
[7] => good
[8] => bad
[9] => bad
[10] => good
[11] => bad
我需要一个只包含好项目的数组,如:
[0] => good
[1] => good
[2] => good
[3] => good
[4] => good
我该怎么办?您可以使用以下功能:
$good_value ="good";
$new_array = array_filter($old_array,function($value)use($good_value){
return $value === $good_value;
});
您还可以使用一种利用和: 或者,如果要保持原始索引:
$goodArray = array();
foreach($array as $key => $value) {
if ($value = "good") {
$goodArray[$key] = $value;
}
}
你可以用一个循环
$newArray = array();
foreach($oldArray as $value) {
if($value == 'good')
$newArray[] = $value
}
如果你需要保留钥匙的话
$newArray = array();
foreach($oldArray as $key=>$value) {
if($value == 'good')
$newArray[$key] = $value
}
使用PHP的函数
function good($var)
{
return($var == "good");
}
$ary = array_filter($ary, "good");
print_r($ary);
如果需要重新索引数组,只需添加以下内容:
$ary = array_values($ary);
您的意思是对样本输出中的条目重新编号吗?
$ary = array_values($ary);