Description
string 
decbin ( int number )
     Returns a string containing a binary representation of the given
     number argument.  The largest number that can be converted is
     4294967295 in decimal resulting to a string of 32 1's.
    
     
Example 1. decbin() example 
<?php echo decbin(12) . "\n"; echo decbin(26); ?>
 |  
 The above example will output:  | 
    
     See also bindec(),
     decoct(),
     dechex() and
     base_convert().