(PHP 4, PHP 5, PHP 7)
Find whether the type of a variable is integer
bool is_int ( mixed $var )
Finds whether the type of the given variable is integer.
Note:
To test if a variable is a number or a numeric string (such as form input, which is always a string), you must use is_numeric().
Parameters:
var
The variable being evaluated.
Returns:
Returns TRUE
if var
is an integer, FALSE
otherwise.
Examples:
is_int() example
<?php $values = array(23, "23", 23.5, "23.5", null, true, false); foreach ($values as $value) { echo "is_int("; var_export($value); echo ") = "; var_dump(is_int($value)); } ?>
The above example will output:
is_int(23) = bool(true) is_int('23') = bool(false) is_int(23.5) = bool(false) is_int('23.5') = bool(false) is_int(NULL) = bool(false) is_int(true) = bool(false) is_int(false) = bool(false)
See also:
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