PHP is_scalar() function

Author：Eve Cole Update Time：2024-12-28 08:48:02

The is_resource() function is used to detect whether a variable is a scalar.

Scalar variables are those that contain integer, float, string or boolean, while array, object and resource are not scalars.

PHP 4 >= 4.0.5, PHP 5, PHP 7

grammar

 bool is_resource (mixed $var)

Parameter description:

$var: The variable to be tested.

return value

Returns TRUE if the specified variable is a scalar, FALSE otherwise.

Example

<?php function show_var ( $var ) { if ( is_scalar ( $var ) ) { echo $var ; } else { var_dump ( $var ) ; } } $ pi = 3.1416 ; $sites = array ( " Codercto " , " Google " , " Facebook " ) ; show_var ( $pi ) ; echo PHP_EOL ; show_var ( $sites ) ?>

The output is:

 3.1416array(3) { [0]=> string(6) "Codercto" [1]=> string(6) "Google" [2]=> string(8) "Facebook"}