Home >Backend Development >PHP Tutorial >php变量名中有变量

php变量名中有变量

WBOY
WBOYOriginal
2016-06-06 20:40:44963browse

<code>$a = array(
    array(
        'name' => 'lang',
        'user' => '0',
        'value' => 'zh-CN'
        ),
    array(
        'name' => 'charset',
        'user' => '22',
        'value' => 'UTF-8'
        ),
);
</code>

想在页面以 $site['lang'] 输出 zh-CN,$site['charset'] 输出 UTF-8

我的错误写法,求写法

<code>foreach ($a as $opt) {
    foreach ($opt as $key => $value) {
        if ($key == 'name') {
            $key_name = $value;
        }
        if ($key == 'value') {
            $key_value = $value;
        }
    }
    $site = 'site[\''. $key_name .'\']';
    $$site = $key_value;
}
</code>

回复内容:

<code>$a = array(
    array(
        'name' => 'lang',
        'user' => '0',
        'value' => 'zh-CN'
        ),
    array(
        'name' => 'charset',
        'user' => '22',
        'value' => 'UTF-8'
        ),
);
</code>

想在页面以 $site['lang'] 输出 zh-CN,$site['charset'] 输出 UTF-8

我的错误写法,求写法

<code>foreach ($a as $opt) {
    foreach ($opt as $key => $value) {
        if ($key == 'name') {
            $key_name = $value;
        }
        if ($key == 'value') {
            $key_value = $value;
        }
    }
    $site = 'site[\''. $key_name .'\']';
    $$site = $key_value;
}
</code>

<code>//if your php version >= 5.5
$site = array_column($a, 'name', 'value');

//else
$site = array();
foreach($a as $t) $site[$t['name']] = $t['value'];
</code>
Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn