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PHP语言，什么是空字符串？解决方法

WBOYOriginal: 2016-06-13 12:34:12865browse

PHP语言，什么是空字符串？
给个实例！

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------解决方案--------------------

<?php<br />
<br />
$a="";//a为空字符串<br />
$b="NULL";//这里的“NULL”也表示b为空字符串<br />
<br />
?>

------解决方案--------------------
长度为 0 的字符串

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PHP语言，什么是空字符串？解决方法

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