(No version information available, might be only in CVS)
is_binary — Finds whether a variable is a native binary string
Finds whether the given variable is a native binary string.
The variable being evaluated.
Returns TRUE if var is a native binary string, FALSE otherwise.
Example #1 is_binary() example
<?php
// Declare a unicode string
$unicode = 'This is a unicode string';
// Declare a binary string using the 'b' prefix
// available as of PHP 5.2.1, but it will only have
// effect as of PHP 6.0.0
$binary = b'This is a binary string';
var_dump(is_binary($unicode), is_binary($binary));
?>
The above example will output:
bool(false) bool(true)