The FILTER_VALIDATE_INT constant validates value as integer.
Options and flags
min_range − The minimum integer value
max_range − The maximum integer value
FILTER_FLAG_ALLOW_OCTAL − Allows octal number values
FILTER_FLAG_ALLOW_HEX − Allows hexadecimal number values
Return
The FILTER_VALIDATE_INT constant does not return anything.
Example
<?php $int = 110; $var = 3.5; var_dump(filter_var($var, FILTER_VALIDATE_FLOAT)); if (filter_var($int, FILTER_VALIDATE_INT)) { echo("Integer Variable"); } else { echo("Not an Integer Variable"); } ?>
Output
The following is the output.
float(3.5) Integer Variable
Let us see another example.
Example
<?php $int = 5; $min = 1; $max = 20; if (filter_var($int, FILTER_VALIDATE_INT, array("options" => array("min_range"=>$min, "max_range"=>$max))) === false) { echo("Range not accepted!"); } else { echo("Accepted range!"); } ?>
Output
Here is the output.
Accepted range!