Question

How to convert int to hex with leading zeros in PHP

Answer 1

$n = 253;
echo str_pad(dechex($n), 4, "0", STR_PAD_LEFT) . "\n";
 
$n = 10;
echo str_pad(dechex($n), 4, "0", STR_PAD_LEFT) . "\n";


  
  
  
/*
run:
   
00fd
000a
   
*/

 

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Answer 2

$n = 253;
echo sprintf("#%04X", $n) . "\n";
  
$n = 10;
echo sprintf("#%04X", $n);
 
 
   
   
   
/*
run:
    
#00FD
#000A
    
*/

 

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