PHP is_finite() Function

The is_finite() is PHP mathematical function, which is used to find whether a value is a legal finite number.

Syntax:

It returns true (1) if the value is a finite number, otherwise it returns false/nothing.

Parameter	Description	Required/Optional
value	Value to check	Required

Example 1

<?php
$nos=2;
 echo "Your given value is :".$nos;
 echo "<br>"."By using 'is_finite()' Function :".is_finite($nos);
?>

Output:

Your given value is :2
By using 'is_finite()' Function :1

Example 2

<?php 
echo "Your Number is: 20000";
echo "<br>"."By using 'is_finite()' function your value is:".is_finite(2000);
?>

Output:

Your Number is: 20000
By using 'is_finite()' function your value is:1

Example 3

<?php 
$finite = 42;
var_dump(is_finite($infinite));
?>

Output:

bool(true)

Example 4

<?php 
$infinite = log(0);
var_dump(is_finite($infinite));
?>

Output:

bool(false)

Example 5

<?php 
$nan = acos(2);
var_dump(is_finite($nan));
?>

Output:

bool(false)

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PHP is_finite() Function

Syntax:

Example 1

Example 2

Example 3

Example 4

Example 5

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