PHP Numbers
You must have noticed one thing that whenever we take the numbers in the identification, then its conversion becomes automatic Or we can say that whatever number we give through Varible, the data type of the number is automatically correct according to its data type.Then, if you assign a string to the same variable, the type will change to a string. PHP numbers with integersThis automatic conversion can sometimes break your code.
PHP NaN
NaN stands for Not a Number.
NaN is used for impossible mathematical operations.
PHP has the following functions to check if a value is not a number:
- is_nan()
However, the PHP var_dump() function returns the data type and value:
Example
Invalid calculation will return a NaN value:
Example
NOTE :- From PHP 7.0: The is_numeric() function will return FALSE for numeric strings in hexadecimal form (e.g. 0xf4c3b00c), as they are no longer considered as numeric strings.
NOTE :- Video on This Topic :- Soon
Have a Nice Stay Here : - )
<!DOCTYPE html>
<html>
<head>
<title> PHP numbers with NaN </title>
</head>
<body>
<h1> </h1>
<?php
// check if the type of a variable is integer
<html>
<head>
<title> PHP numbers with NaN </title>
</head>
<body>
<h1> </h1>
<?php
// check if the type of a variable is integer
$x = acos(8);
var_dump($x);
?>
flaot(NaN)
NOTE :- From PHP 7.0: The is_numeric() function will return FALSE for numeric strings in hexadecimal form (e.g. 0xf4c3b00c), as they are no longer considered as numeric strings.
NOTE :- Video on This Topic :- Soon
Have a Nice Stay Here : - )
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