w3resource

php.js : is_real() function

is_real() function

The is_real() function is used to check whether a variable is real or not. The function returns true if a variable is real otherwise false.

Version:

1103.1210

Syntax:

is_real(var_name)

Parameters:

Name Description Required /
Optional
Type
var_name The variable being checked Required Mixed*

*Mixed : Mixed indicates that a parameter may accept multiple (but not necessarily all) types.

Example of php.js is_real() function:

In the following web document is_real() function test whether a variable is real or not.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<title>php.js : is_real() function example</title>
<script type="text/javascript" src="../../phpjs/variable/variable.min.js"> </script>
</head>
<body>
<h1 style="color: green">php.js : is_real() function example</h1>
<h3>Cheack whether a variable is real or not....</h3>
<hr />
<script type="text/javascript">
//This is done to make the following JavaScript code compatible to XHTML. <![CDATA[
document.write('is_real(85)'+'<br>');
var_dump(is_real(85));
document.write('<br>'+'is_real(1185.44)'+'<br>');
var_dump(is_real(1185.44));
document.write('<br>'+'is_real(-11)'+'<br>');
var_dump(is_real(-11));
//]]>
//]]>
</script>
</body>
</html>

Output of the function:

is_real(85)
bool(false)
is_real(1185.44)
bool(true)
is_real(-11)
bool(false)

View example of php.js is_real() function in browser

Download phpjs.zip

Previous: php.js : is_object() function
Next: php.js : is_resource() function



Share this Tutorial / Exercise on : Facebook and Twitter