我有一个字符串形式的数组键列表
"hasAddStrict,freqItems,freqAmount,freqUnit,freqFirstDayOfWeek"
现在,想要只提取那些值,即$ myarray [' hasAddstrict']应该变成$ hasAddStrict等。
有一个简短的方法吗?我相当肮脏的解决方案:
$ff = explode(',' ,"hasAddStrict,freqItems,freqAmount,freqUnit,freqFirstDayOfWeek");
foreach ( $ff as $key){ $ff[$key] = $SERVICE[$key] ; }
extract($ff);
答案 0 :(得分:0)
我同意杰夫认为没有更好的方法,并且将变量保持为数组可能是一个更好的主意,但你可以将它包装在一个函数中以方便(在php 5.6中测试):< / p>
<?php
function array_extract(array $assoc_array, $keys_list)
{
return array_intersect_key($assoc_array, array_flip(explode(',', $keys_list)));
}
extract(array_extract($SERVICE, "hasAddStrict,freqItems,freqAmount,freqUnit,freqFirstDayOfWeek"));
按以下方式进行测试时:
$SERVICE = [
'hasAddStrict' => 123,
'freqItems' => 456,
'freqAmount' => 789,
'freqUnit' => 'abc',
'freqFirstDayOfWeek' => 'def',
];
extract(array_extract($SERVICE, "hasAddStrict,freqItems,freqAmount,freqUnit,freqFirstDayOfWeek"));
var_dump($hasAddStrict, $freqItems, $freqAmount, $freqUnit, $freqFirstDayOfWeek);
你得到输出:
int(123)
int(456)
int(789)
string(3) "abc"
string(3) "def"