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PHP实例：常用的数值判断函数_[PHP教程] 常用的对象类型判断
常用的数值判断函数
//判断数组
colors = array("red", "blue", "green");
if(is_array(colors))
{
print("colors is an array"."");
}
//双精度数判断
Temperature = 15.23;
if(is_double(Temperature))
{
print("Temperature is a double"."");
}
//整数判断
PageCount = 2234;
if(is_integer(PageCount))
{
print("PageCount is an integer"."");
}
//对象判断
class widget
{
var name;
var length;
}
thing = new widget;
if(is_object(thing))
{
print("thing is an object"."");
}
//字符判断
Greeting = "Hello";
if(is_string(Greeting))
{
print("Greeting is a string"."");
}
?>
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