PHP的几个常用数字判断函数代码

2024-05-04 23:15:05

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复制代码代码如下:

<HTML>
<HEAD>
<TITLE>常用的数值判断函数</TITLE>
</HEAD>
<BODY>
<?
//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"." ");
}
?>
</BODY>
</HTML>