How to make a counter with zero to the left

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#1 by (12 votes)

11

I need to print values like this, with leading zeros

00001
  00002
  00003

for($i = 00001; $i < 10000; $i++){
   validar($i);
   echo $i."\n\r";
}

php

asked by anonymous 22.11.2015 / 10:10

1 answer

score 12 · Accepted Answer

Just use str_pad :

for($i = 1; $i < 10000; $i++){
   echo str_pad( $i, 5, '0', STR_PAD_LEFT ) . "\n";
}

Result:

See working at IDEONE .

Parameters: input value, desired size, fill character (s), position.

See online documentation for the details of the function.