Several common number judgment function codes in PHP_PHP tutorial

Copy code The code is as follows:

//Judgment array
$colors = array("red", "blue" , "green");
if(is_array($colors))
{
print("colors is an array"."
");
}
// Double precision number judgment
$Temperature = 15.23;
if(is_double($Temperature))
{
print("Temperature is a double"."
");
}
//Integer judgment
$PageCount = 2234;
if(is_integer($PageCount))
{
print("$PageCount is an integer"."
" );
}
//Object judgment
class widget
{
var $name;
var $length;
}
$thing = new widget;
if(is_object($thing))
{
print("thing is an object"."
");
}
//Character judgment
$Greeting = "Hello";
if(is_string($Greeting))
{
print("Greeting is a string"."
");
}
?>

http://www.bkjia.com/PHPjc/325323.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/325323.htmlTechArticleCopy code The code is as follows: HTML HEAD TITLE Commonly used numerical judgment functions/TITLE /HEAD BODY ? //Judge array$ colors = array("red", "blue", "green"); if(is_array($colors)) { print("colo...