PHP实例：常用的数值判断函数_PHP教程

常用的对象类型判断

//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"."
");
}
?>

http://www.bkjia.com/PHPjc/509204.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/509204.htmlTechArticle常用的对象类型判断 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("col...