php_strip_whitespace()

[Sayian]

Anyone know of a way to do this in php 4?

[Edit] To clear things up for people who may not know what this does. Its a php5 function that returns a string, stripped of all whitespace and comments.

Just wondering how i could accomplish this in php4?

[Installer]

This won't work (a lot more conditions to check for), but it might (or might not) be a start:

function strip_whitespace_php($file)
{
    $tmp = $file;
    while ($pos_1 = strpos($tmp, '//')) {
        $pos_2 = strpos($tmp, "\n", $pos_1);
        $tmp = str_replace(substr($tmp, $pos_1, $pos_2 - $pos_1 + 1), '', $tmp);
    }
    while ($pos_1 = strpos($tmp, '/*')) {
        $pos_2 = strpos($tmp, '*/', $pos_1);
        $tmp = str_replace(substr($tmp, $pos_1, $pos_2 - $pos_1 + 1), '', $tmp);
    }
    $tmp = str_replace(array("\t", "\r", "\n", " "), '*', php_strip_whitespace($tmp));
    return $tmp;
}

BTW, "php_strip_whitespace()" doesn't strip all whitespace, at least in v.5.0.4, according to this script:

// PHP comment here

/*
 * Another PHP comment
 */
$str = php_strip_whitespace(__FILE__);
echo '<pre>';
echo htmlentities(str_replace(array("\t", "\r", "\n", " "), '*', $str));
   echo '</pre>';
// Newlines are considered whitespace, and are removed too:

[Sayian]

Thanks, but i tried to run that and got several errors

1. Was the function php_strip_whitespace was used, and its not a valid php 4 function so i removed it, and got several other errors.

Any other ideas?

[Installer]

😃 I don't know why I typed in that function name; it should be just "$tmp", of course.

As I said, I know the code won't work as is, and didn't even bother to test it. I just put it out there as something to possibly work from.

Here's an error-free version. It's takes out too much, but it's the best I can do. Feel free to ignore it.

echo strip_whitespace_php($file_to_strip);

function strip_whitespace_php($file) 
{ 
    $tmp = file_get_contents($file); 
    while (($pos_1 = strpos($tmp, '//')) !== false) { 
        $pos_2 = strpos($tmp, "\n", $pos_1); 
        $tmp = str_replace(substr($tmp, $pos_1, $pos_2 - $pos_1 + 1), '', $tmp); 
    } 
    while ($pos_1 = strpos($tmp, '/*')) { 
        $pos_2 = strpos($tmp, '*/', $pos_1); 
        $tmp = str_replace(substr($tmp, $pos_1, $pos_2 - $pos_1 + 1), '', $tmp); 
    } 
    $tmp = str_replace(array("\t", "\r", "\n", " "), '', $tmp); 
    return $tmp; 
}