[SOLVED] str_replace?

[DJTim666]

When I use the following code to replace user_input, it outputs "br" instead of "< br >".

 

<?php

$profile = $_POST[newprofile];
$user_input = array("[br]", "[u]", "[/u]", "[b]", "[/b]", "[img=", "]", "[url]", "[/url]", "[hr]", "<", "/>", ">");
$replace_with = array("<br>", "<u>", "</u>", "<b>", "</b>", "<img src='", "'>", "<a href='", "'></a>", "<hr>", "", "", "");
$new_pro = str_replace($user_input, $replace_with, $profile);

?>

 

--

DJ

[Crow]

That's because you're replacing all <'s >'s and </'s with nothing later on in the array.

 

Basically, you're converting your [br] to < br > and then it's seeing that <br> and replacing the <>.

 

I suggest changing your order of replacement to replace the <> first, before converting the BBesque code.

 

Hope this helps,

Steve

[wildteen88]

This is what is happing:

 

PHP is replacing [br] in to <br> correctly and returning the new value back into user_input but as PHP gets to the end of the arrays it'll remove the following symbols < and >

 

This is why you get br instead of <br>.

 

What you should so is replace all symbols first then convert your bbcodes into html using regex rather than str_replace.

<?php

if(isset($_POST['newprofile']))
{
    $profile = $_POST['newprofile'];

    // remove bad symbols using str_replace first
    $new_pro = str_replace(array('<', '/>', '>'), '', $profile);

    // now we'll convert the bbcodes using regex:
    $bbcodes = array( '|\[b\](.*)\[/b\]|is',
                      '|\[i\](.*)\[/i\]|is',
                      '|\[u\](.*)\[/u\]|is',
                      '|\[img=([a-z]+?://){1}(.+?)\]|is',
                      '|\[url\](.*?)\[/url\]|is',
                      '|\[hr\]|is'
                    );

    $html = array( '<b>\\1</b>',
                   '<i>\\1</i>',
                   '<u>\\1</u>',
                   '<img src="\\1\\2" />',
                   '<a href="\\1" target="_blank" title="">\\1</a>',
                   '<hr />'
                 );

    $new_pro = preg_replace($bbcodes, $html, $new_pro);

    echo nl2br($new_pro);
}

?>
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post">
<textarea name="newprofile" cols="80" rows="10"><?php echo @$_POST['newprofile']; ?></textarea><br />
<input type="submit" value="submit" />
</form>