For Loop starting from 0001 instead of 1

Question

I'm doing a for loop to count from 0001 up to 0999

How can i do this with php. All i've got so far is a normal php for loop.

Are you trying to echo the values 0001 to 0999?, if so use a normal for loop but sprintf() to format the values when you echo — Mark Baker, Sep 06 '12 at 19:48
Please be more clear what you're looking for. Are you just trying to get leading zeros? — John Saunders, Sep 06 '12 at 19:58

score 8 · Accepted Answer · answered Sep 06 '12 at 19:49

8

Something like this?

for($i = 1; $i<=999; $i++){
    echo str_pad($i, 4, '0', STR_PAD_LEFT);
}

Additionally, you can make use of sprintf() instead of str_pad(), but I think str_pad() looks much clearer than sprintf() in this case.

answered Sep 06 '12 at 19:49

Christian

score 6 · Answer 2 · answered Sep 06 '12 at 19:47

6

What you want to do is a normal loop and format the output:

for( $i=1; $i<=999; $i++) {  
  $myformat = str_pad($i, 4, '0', STR_PAD_LEFT);         
  // do something with $myformat
}

answered Sep 06 '12 at 19:47

JvdBerg

score 3 · Answer 3 · answered Sep 06 '12 at 19:49

3

Try that code:

for($n=1;$n<=999;$n++)
{
    $formatted_n = str_pad($n, 4, '0', STR_PAD_LEFT);
    // add some code here
}

answered Sep 06 '12 at 19:49

Jocelyn

score 0 · Answer 4 · answered Sep 06 '12 at 19:51

0

<?php

for($i=1; $i<=999; $i++) {
 echo str_pad($i, 4, "0", STR_PAD_LEFT);
}

?>

answered Sep 06 '12 at 19:51

sarsnake

score 0 · Answer 5 · answered Sep 06 '12 at 20:31

0

Here is a version using sprintf():

foreach (range(1, 999) as $i){
  echo sprintf("%04d", $i); 
} // output: 000100020003...

answered Sep 06 '12 at 20:31

jon

`echo sprintf()` is an "antipattern". There is absolutely no reason that anyone should ever write `echo sprintf()` in any code for any reason -- it should be `printf()` without `echo` every time. – mickmackusa Apr 09 '22 at 02:27

5 Answers5