php preg_replace表现不同

Question

I have a piece of text in the forum:

line one; 
line two; 
line three; 
line four; 


(the result was produced by geshi - $geshi->parse_code();)

I tried to remove "
" using

$result2=preg_replace("/&\#13;/", "", $result1);

but it is not working.

The strange thing is: this is done successfully in the live php regular expression tester: http://www.phpliveregex.com/

could some expert advise on it?

thanks a lot!

BTW: I tried var_dump and the output does not change except the title changed to string(5411) " see http://saslab.org

I also tried to use // to remove the symbols, but in vain.

thank you for all suggestions!

Answer 1

see if this is what you need:

<?php 

$str="line one; &#13;line two; &#13;line three; &#13;line four; &#13;";
$result2 = str_replace("&#13", ":", $str);//replace : with your required string.
echo $result2;

?>