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有关于PHP中常见数据类型的汇总分享_PHP

Jun 01, 2016 am 11:58 AM
php type of data

PHP 数据类型

PHP 支持八种原始类型(type)。

四种标量类型:
string(字符串)
integer(整型)
float(浮点型,也作 double )
boolean(布尔型)

两种复合类型:
array(数组)
object(对象)

两种特殊类型:
resource(资源)
NULL(空)

查看变量类型

通过 gettype() 函数可以方便的查看某个变量的类型:
复制代码 代码如下:
(PS:T不错的PHP Q扣峮:276167802,验证:csl)

提示

由于历史原因,如果是 float 类型数据,gettype() 函数返回的是 double,而不是 float 。
如果想查看某个表达式的值和类型,请使用用 var_dump() 函数。

判断变量类型

如果想通过判断变量类型来确定下一步逻辑动作,不要使用 gettype() ,而使用 is_type 系列函数:
复制代码 代码如下:


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