$string = eregi_replace("\[", "<", $string); Outputs nothing

[masteroleary]

I am trying to replace the [ character with < by using the code:

 

$string = eregi_replace("\[", "<", $string);

 

But it outputs nothing. If I replace < with 0 then it works as should. Ideas?

[effigy]

Works fine for me:

 

<?php
$string = '[';
echo $string = eregi_replace("\[", "<", $string);
?>

[masteroleary]

I get the same results when using your code. However, when using this code i get the results below.

function unfilter_Desc($string)
{
echo 'Input: '. $string . ' <br />String Test: ' . is_string($string) ."<br />";
$string = eregi_replace("\[", "<", $string);
echo 'Result: '. $string . '<br /><br /><br />';
}
unfilter_Desc('[b]hello[/b]');

 

Output

Input: [b]hello[/b]
String Test: 1
Result: 

[Zeon]

Hi. Try this as a quick solution:

 

function replace_tags($string){
    $src = array('/\[/','/\]/');
    $rep = array('<','>');
    return preg_replace($src,$rep,$string);
}

echo replace_tags('[strong]Hello[/strong]');

[kucing]

Here is another example which may work for you since my understanding that you are trying to input bbcodes..

I am still a noob when comes to regexp but trying to get few things sorted

 

	
function replace_tags($string) {

$RegExpPattern = array(
'/(!|!){10,}/',
'/\[b\](.*?)\[\/b\]/is',
'/\[i\](.*?)\[\/i\]/is',
'/\[u\](.*?)\[\/u\]/is',
'/\\n/',
);

$RegExpReplace = array(
'!',
'<strong>\\1</strong>',
'<em>\\1</em>',
'<u>\\1</u>',
'<br />',
);

$string = preg_replace($RegExpPattern, $RegExpReplace, $string);

return $string;
}

[effigy]

The problem with your original code is that you're only replacing "[" and not "]". As a result, the "<" does not find a closing ">", which mucks up your HTML. Change this line of code to see what I mean:

 

echo 'Result: '. htmlspecialchars($string) . '<br /><br /><br />';

[masteroleary]

Here is another example which may work for you since my understanding that you are trying to input bbcodes..

I am still a noob when comes to regexp but trying to get few things sorted

 

	
function replace_tags($string) {

$RegExpPattern = array(
'/(!|!){10,}/',
'/\[b\](.*?)\[\/b\]/is',
'/\[i\](.*?)\[\/i\]/is',
'/\[u\](.*?)\[\/u\]/is',
'/\\n/',
);

$RegExpReplace = array(
'!',
'<strong>\\1</strong>',
'<em>\\1</em>',
'<u>\\1</u>',
'<br />',
);

$string = preg_replace($RegExpPattern, $RegExpReplace, $string);

return $string;
}

I dont understand the code on the line with ################## below

$RegExpPattern = array(
'/(!|!){10,}/',  // #######What is the purpose of the line?########
'/\[b\](.*?)\[\/b\]/is', 
'/\[i\](.*?)\[\/i\]/is', 
'/\[u\](.*?)\[\/u\]/is', 
'/\\n/', 
);

$RegExpReplace = array(
'!',
'<strong>\\1</strong>',
'<em>\\1</em>',
'<u>\\1</u>',
'<br />',
);

[wildteen88]

This line:

'/(!|!){10,}/',

Converts 10 or more explanation marks (!) into a single explanation mark.

 

&#33; is the hex code for explanation mark.

[mb81]

This line:

'/(!|!){10,}/',

Converts 10 or more explanation marks (!) into a single explanation mark.

 

! is the hex code for explanation mark.

 

It's an exclamation mark, not an explanation mark.

[masteroleary]

Why would there be 10 ! marks ?

[wildteen88]

Not really sure on that one. You'll have to ask kucing that. I think kucing copied that from his BBCode parser. Its probably a way kucing uses to stop people "over-typing" exclamation marks (thanks mb891 for correcting me).