PHP: run a function during preg_replace

Question

This is an ongoing issue (sadly unsolved), if you're bored
enough you can
see my other posts.
The code I have so far (thanks to one and all), successfully
creates
hyperlinks that target the right files, have the right
'title', etc.
However, the getFileSize function refuses to work within the
preg_replace.
Seems to me that I can't properly send the $1 variable to the
getFileSize
function; the $strfilename always just shows up as $1, but
really it should
be a file name, as it is within the hyperlink section. Most
boring.
So, does anyone know how to trigger the getFileSize by
sending $1 as a
string rather than just as a variable name '$1'?
When called separately the function getFileSize works, so the
issue really
is the getFileSize('$1') section.
<?php function changeMe($str){
$pattern = "/\{([^:]*):([^\}]*)\}/";
preg_match($pattern,$str,$matches);
$file = $matches[2];
$pattern = "/\{link:([^\}]*)\}/";
return preg_replace($pattern,'<a href="docs/$1"
title="click to open $1"
target="_blank">'.getFileSize('$1').'</a>',$str);}
?>
<?
function getFileSize($strfilename){
echo $strfilename.'<br />'; //returns $1 but should
really return the file
name
$pathname='docs/';
$fullname=$pathname.$strfilename;
if (file_exists($fullname)){
$strsize = human(filesize($fullname));
return($strfilename.' : '.$strsize);
} else {
return("no file found");
return;
function human($size){
for($si = 0; $size >= 1024; $size /= 1024, $si++);
return round($size, 1).substr(' kMG', $si, 1);}
?>

Answer 1

Thanks Joris,
the preg_replace_callabck() has me thoroughly confused, but I
guess a few
more sleepless nights and I'll either have cracked it or
moved to
Kyrgyzstan.
Craig
"Joris van Lier" <[email protected]> wrote in message
news:[email protected]...
> Did you see Michael Fesser's reply in an earlier thread
about
> preg_replace_callback()?
> it seems like that's what you need.
>
> "Craig" <[email protected]> wrote in message
> news:[email protected]...
>> This is an ongoing issue (sadly unsolved), if you're
bored enough you can
>> see my other posts.
>> The code I have so far (thanks to one and all),
successfully creates
>> hyperlinks that target the right files, have the
right 'title', etc.
>> However, the getFileSize function refuses to work
within the
>> preg_replace.
>> Seems to me that I can't properly send the $1
variable to the getFileSize
>> function; the $strfilename always just shows up as
$1, but really it
>> should be a file name, as it is within the hyperlink
section. Most
>> boring.
>> So, does anyone know how to trigger the getFileSize
by sending $1 as a
>> string rather than just as a variable name '$1'?
>> When called separately the function getFileSize
works, so the issue
>> really is the getFileSize('$1') section.
>>
>> <?php function changeMe($str){
>> $pattern = "/\{([^:]*):([^\}]*)\}/";
>> preg_match($pattern,$str,$matches);
>> $file = $matches[2];
>> $pattern = "/\{link:([^\}]*)\}/";
>> return preg_replace($pattern,'<a href="docs/$1"
title="click to open $1"
>>
target="_blank">'.getFileSize('$1').'</a>',$str);}
>> ?>
>> <?
>> function getFileSize($strfilename){
>> echo $strfilename.'<br />'; //returns $1 but
should really return the
>> file name
>> $pathname='docs/';
>> $fullname=$pathname.$strfilename;
>> if (file_exists($fullname)){
>> $strsize = human(filesize($fullname));
>> return($strfilename.' : '.$strsize);
>> } else {
>> return("no file found");
>> }
>> return;
>> }
>> function human($size){
>> for($si = 0; $size >= 1024; $size /= 1024,
$si++);
>> return round($size, 1).substr(' kMG', $si, 1);}
>> ?>
>>