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php变量类型

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Jun 23, 2016 pm 02:32 PM

php variable type

简介：这是php变量类型的详细页面，介绍了和php,有关的知识、技巧、经验，和一些php源码等。

class='pingjiaF' frameborder='0' src='http://biancheng.dnbcw.info/pingjia.php?id=326446' scrolling='no'> PHP支持如下的变量类型：

integer ：整数
double ：双精度数
string ：字符串
array ：队列数组
object ：对象
pdfdoc (only if enabled PDF support) ：PDF文本（仅仅在起用PDF支持之后生效）
pdfinfo (only if enabled PDF support) ：PDF信息（仅仅在起用PDF支持之后生效）
这些变量的类型通常不由程序员来设置；特别的，它在运行时由PHP依据上下文来设置使用什么类型。

如果您喜欢强制将某个变量转换到指定的类型，您还可以对该变量进行“cast”操作，或者使用函数“settype（）”。

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