常用的php对象类型判断
2018-09-07 15:07
阅读：257
<HTML>
<HEAD>
<TITLE>php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.<br>);
}
//双精度数判断
$Temperature = 15.23;
if(is_double($Temperature))
{
print(Temperature is a double.<br>);
}
//整数判断
$PageCount = 2234;
if(is_integer($PageCount))
{
print($PageCount is an integer.<br>);
}
//对象判断
class widget
{
var $name;
var $length;
}
$thing = new widget;
if(is_object($thing))
{
print(thing is an object.<br>);
}
//字符判断
$Greeting = Hello;
if(is_string($Greeting))
{
print(Greeting is a string.<br>);
}
?>
</BODY>
</HTML>
评论
亲，登录后才可以留言！