代碼如下:

常用的數(shù)值判斷函數(shù)

//判斷數(shù)組

$colors = array("red", "blue", "green");

if(is_array($colors))

{

print("colors is an array"."
");

}

//雙精度數(shù)判斷

$Temperature = 15.23;

if(is_double($Temperature))

{

print("Temperature is a double"."
");

}

//整數(shù)判斷

$PageCount = 2234;

if(is_integer($PageCount))

{

print("$PageCount is an integer"."
");

}

//對(duì)象判斷

class widget

{

var $name;

var $length;

}

$thing = new widget;

if(is_object($thing))

{

print("thing is an object"."
");

}

//字符判斷

$Greeting = "Hello";

if(is_string($Greeting))

{

print("Greeting is a string"."
");

}

?>

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