PHP output number with leading zeros incorrectly

Question

I have a line in a file like this:

0000000/BirthstoneEnsemble/f/0/1380152724

I explode by $pieces = explode("/", $line);

when I do echo $pieces[0] == "0000000" it returns false. I try to cast pieces[0] to string, but it is always incorrect.

function build_file_assoc() {
global $dir;
$assoc = [];

   $file_assoc = file($dir . 'rsnjxdlxwxwun.dbt'); 

   for($i = 0; $i < count($file_assoc) - 1; $i++) {

   if($i > 0) {

        list($parent_folder, $image_name, $tag, $size, $date) = explode("/", $file_assoc[$i]);
        $assoc[] = [
            'parent_folder' => (string)$parent_folder,
            'image_name' => $image_name,
            'tag' => $tag,
            'size' => $size,
            'date' => $date
        ];

       }
   }

   return $assoc;
}

$g = build_file_assoc();

$first = $g[0]['parent_folder'];

echo $first == "0000000"; // false

file contents:

0000000/BirthstoneEnsemble/f/0/1380152724
0000000/Thumbs.db/a/83968/1384248954
0000000/bridal images for frame/f/0/1380152879

yes. it is frustrating because visually it prints out as 0000000 which is what i expected. under the hood tho, that is apparently not the case. — Stephen K, Dec 13 '13 at 21:20
updated question with full code. yes, i have tried ==, ===, casting both sides to string, etc.. — Stephen K, Dec 13 '13 at 21:22
["parent_folder"]=> string(15) "0000000" i am guessing this is the issue. — Stephen K, Dec 13 '13 at 21:25
did you try `var_dump($pieces[0])`? `string(15)` means there's 15 chars/bytes worth of data, but "0000000" should only be a string(7). — Marc B, Dec 13 '13 at 21:26

score 0 · Answer 1 · answered Dec 13 '13 at 21:22

0

Try print array print_r($pieces) and you will see what is saved in specific fields after exlode.

answered Dec 13 '13 at 21:22

Lukáš B.

26
5

score 0 · Answer 2 · answered Dec 13 '13 at 21:22

0

If I run the code from your question, it works:

<?php 
$line = '0000000/BirthstoneEnsemble/f/0/1380152724';
$pieces = explode("/", $line);

echo var_dump($pieces[0] == "0000000"); //true
 ?>

answered Dec 13 '13 at 21:22

Lasse

1,414
11
19

the lines in the file are not wrapped in quotes.. your example makes the entire thing a string – Stephen K Dec 13 '13 at 21:24
@StephenKnoth Yes but I wrote it *before* you posted full source. Never the less, `file()` probably returns an array of strings. You can test this with `var_dump($first);` – Lasse Dec 13 '13 at 21:30

score 0 · Answer 3 · answered Dec 13 '13 at 21:24

I would use the identical comparison operator and type cast pieces[0] as a string.

$line = '0000000/BirthstoneEnsemble/f/0/1380152724';

$pieces = explode('/',$line);

//echo '<pre>',print_r($pieces),'</pre>';

if((string)$pieces[0]==='0000000'){
    echo true;
}else{
    echo false;
}
// output: 1

score 0 · Answer 4 · edited May 23 '17 at 12:19

0

var_dump

Check the actual value of your piece, since it's possible that you have a space or a tab character in there - var_dump will show it for you.

similar issue

Take a look at this post.

edited May 23 '17 at 12:19

Community

1
1

answered Dec 13 '13 at 22:34

M K

9,138
7
43
44

PHP output number with leading zeros incorrectly

4 Answers4