ereg_replace

Anon

Having problems with replacing the percent sign.

For example, someone enters 100% (100 percent) into a form, but when I try ereg_replace("%", "%%", $string); it comes out with an error.

Also, is there a better way of writing this.

$encoded_string=ereg_replace("%", "%%", $string);
$encoded_string=ereg_replace('\\"', '"', $encoded_string);
$encoded_string=ereg_replace "\\'", "'", $encoded_string);

Thanks

Anon

Isn't '%' a special character to ereg? I think you'll have to escape it.

Anon

...but perhaps you need to use addslashes() anyways.

Anon

I tried that but it doesn't work either.

$encoded_string1=ereg_replace("\%", "\%%", $string);

Anon

I have magic quotes on, so I don't think I need to, although I'm not completely sure.

Anon

Thanks for reminding me about the addslashes, I just had a thought to use stripslashes instead of the ereg_replace on the quotes, which works great and has cleaned up my code a bit.

$stripped_string=stripslashes($string);

instead of

$encoded_string1=ereg_replace( '\\"', '"', $string );
$encoded_string=ereg_replace( "\\'", "'", $encoded_string1 );

Anon

(1) You have to escape both percent-signs in the replacement. (2) You may need to double the backslashes if you're using double-quotes to define the strings. IIRC, the last time I looked at this it differred between the pattern and replacement (though this wasn't documented anywhere in the php manuals.)

Anon

I tried the suggestion of
ereg_replace('\%', '\%\%');
but that didn't work. with quotes of double quotes and with the extra backslashes. But no luck. I've tried lots of different combinations.

This is coming from a form field entry, so say the user inputs 100%, then I'm trying to write an ereg_replace for two percent (%%) so that it prints one percent (%).

Anon

I was hoping that this would be an easy one to solve. I've been tearing my hair out all day trying to figure out why this won't work. Any clues anyone?

Anon

Have you solved the problem or not?
str_replace() is just like ereg_replace except that it doesn't do regular expressions.

<?php
$string = "Peter%Bengtsson";
$string = str_replace("%","HEY",$string);
echo $string;
?>

...works fine.

<?php
$string = "Peter\Bengtsson";
$string = str_replace("\","HEY",$string);
echo $string;
?>

...also works fine.