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请问个php的global问题
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- 2016-06-06 20:50:14876browse
<code>$a = 'a';
function a() {
global $a;//此处无法获取到a的值
}
</code>
感觉比较奇怪,请问为什么呢?
回复内容：
<code>$a = 'a';
function a() {
global $a;//此处无法获取到a的值
}
</code>
感觉比较奇怪,请问为什么呢?
你的代码未必是按你想象的那样在全局空间中运行的 ...
<code>global $a; // IMPORTANT
$a = 'a';
function a() {
global $a;
}
</code>
可以呀你怎麼試的..?
<code><?php $a = 'a';
function a() {
global $a;
echo $a;
}
a();
?>
</code>
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