Several common number judgment function codes in PHP, mainly including double precision, integer, character judgment, etc.
<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"."<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>Copy after login
Articles you may be interested in
- PHP function to convert Arabic numerals into Chinese characters
- PHP generates continuous number (letter) array function range() analysis , PHP lottery program function
- PHP commonly used function to judge variables
- php’s most accurate string length interception function
- php function to get the first letter of Chinese pinyin (really can Used)
- php determines whether functions, classes, and class methods exist
- php function to determine visiting spider information
- php reads the directory and lists the files in the directory Function
http://www.bkjia.com/PHPjc/764080.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/764080.htmlTechArticle Several common number judgment function codes in PHP, mainly including double precision, integer, character judgment, etc. HTML HEAD TITLE commonly used numerical judgment functions/TITLE /HEAD BODY ? //Judge array $color...
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
