string formatting

[dannyd]

Hi,

 

If I have the following output

 

00030

00005

02830

00002

00200

 

How do I remove the 0's preceding 0's so after formatted it looks like

 

30

5

2830

2

200

 

 

I thought ltrim would be the answer but I dont think it removes characters from the left such as removing zeros. Any ideas ?

[Isityou]

Have you looked into regular expressions?

 

Also str_replace() function might be useful.

 

http://us.php.net/str_replace

[dannyd]

no i havent. How would a regular expression work to solve it ?

[Isityou]

You search and replace the zeros.

[effigy]

<pre>
<?php
$str = '00030';
echo ltrim($str, '0');
?>
</pre> 

[thebadbad]

You can use intval, if your strings only contain numbers:

 

<?php
$val = 0032;
$val = intval($val);
// $val = 32
?>

 

Else ltrim as you suggested:

 

<?php
$val = '0032';
$val = ltrim($val, '0');
// $val = 32
?>

[dannyd]

Thanks for the quick responses and help!

 

I used the following below using the tip about regular expressions.

 

$length = preg_replace("/^0*/",'', $val);

[kenrbnsn]

Why use preg_replace() for a simple task, when using sprintf() will work fine:

<?php
        $strs = array('00030','00005','02830','00002','00200');
        foreach ($strs as $str)
                echo $str . "<br>\n";
        echo "<br>\n";
        foreach ($strs as $str)
                echo sprintf("%d",$str) . "<br>\n";
?>

 

Ken

[sasa]

echo "00023409" + 0;