[SOLVED] Lowercase with preg_replace

[SoberDude]

I have a *.txt file that looks like:

 

<?php

$Hello="moo";

$BLAH_Hi="cookies";

echo "TEST";

?>

 

Okay, it doesn't look like that, but it's has the same concept (uppercase letters in variable names). Also, don't be confused: the above is a txt file, not a .php file.

 

I need a way to use preg_replace/preg_replace_callback (whatever is best) in order to make all variable names only be consistent of lowercase letters, so the above would be:

 

<?php

$hello="moo";

$blah_hi="cookies";

echo "TEST";

?>

 

Is there a way to do this?

 

Note: I only need the code to replace the uppercase letters in the variables. I don't need the code to write to a file, open it, or anything else. Just pretend the above was a string, and not a file.

[MadTechie]

Something like this should work,

 

<?php
$text = '<?php
$Hello="moo";
$BLAH_Hi="cookies";
echo "TEST";
?>';
$text = preg_replace_callback('/(\$.*?;)/s',"toLower",$text);

echo $text;

function toLower($matches)
{
return strtolower($matches[1]);
}
?>

 

 

[.josh]

mm..think i'd rather do this:

 

$text = preg_replace_callback('/(\$[^=]*=)/s',"toLower",$text);

 

madtechie's would make make the values lowercase also..

[MadTechie]

Ah Very true, I should of read it again, I thought he wanted the values lower!

[SoberDude]

Thanks for the help. It almost works, it's just that, sometimes it goes past just the variable, like:

 

SELECT HIGH_PRIORITY * FROM users WHERE u_userid='$vp_userid' limit 1

 

"limit 1" should be "LIMIT 1".

[MadTechie]

Your example's above didn't show that, however try this

 

<?php
$text = '<?php
$Hello="moo";
$BLAH_Hi="cookies";
echo "TEST";
$Query = "SELECT HIGH_PRIORITY * FROM users WHERE u_userid=\'$vp_userid\' limit 1"
?>';
$text = preg_replace_callback('/(\$.*?)[=\'"}{]/s',"toLower",$text);

echo $text;

function toLower($matches)
{
   return strtolower($matches[1]);
}
?>

 

EDIT: Add }{

 

 

EDIT: #2  Read it this time!

Why should limit be LIMIT ?

that has nothing to do with the first post!

in addition I'm not writing an whole clean up parse!

[SoberDude]

Huh? o.o I meant like, in some of my files, it has:

 

SELECT * FROM table WHERE t_row='$Variable' LIMIT 1

 

and when I use the preg_replace you guys suggested, it changes it to:

 

SELECT * FROM table WHERE t_row='$variable' limit 1

 

The $variable part is good, but I don't want it to change to "limit 1": I want it to stay as "LIMIT 1". XD

 

Thanks

 

[MadTechie]

try my last script. should fix it, it won't change limit to LIMIT, but at the same time it won't affect LIMIT at all!

[SoberDude]

Well, it doesn't change LIMIT, but now is changes it to:

 

SELECT * FROM table WHERE t_row='$variable LIMIT 1

 

(removes the ' after $variable).

 

It even changes:

 

<script type='text/javascript'>

 

to

 

<script type'text/javascript'>

 

o.o

 

Sorry to be a nuisance.

[MadTechie]

oops

'/(\$.*?[=\'"}{])/s'

should be

'/(\$.*?)[=\'"}{]/s'

[SoberDude]

Um, now, it's destroying quotes, equal signs, and brackets. o.o

[MadTechie]

Heres the full code i am using

$text = '<?php
$Hello = "moo";
$BLAH_Hi="cookies";
echo "TEST";
$Query = "SELECT HIGH_PRIORITY * FROM users WHERE u_userid=\'$VP_userid\' limit 1"
?>';

 

<?php
function toLower($matches)
{
return strtolower($matches[1]);
}
echo preg_replace_callback('/(\$.*?[=\'"}{])/s',"toLower",$text);

?>

 

 

heres my output

<?php

$hello = "moo";

$blah_hi="cookies";

echo "TEST";

$query = "SELECT HIGH_PRIORITY * FROM users WHERE u_userid='$vp_userid' limit 1"

?>

 

[SoberDude]

Thank you so much for your help! It turns out I was accidentally using

'/(\$.*?)[=\'"}{]/s'

instead of the new one.

 

Just one more thing: is it possible to make it only change variables that aren't like "$_POST"? Like, if the variable name has a _ in front of it, it will not execute.

 

For example, these would not be changed: $_POST, $_GET, $_SERVER, $_COOKIE, $_SESSION, etc.

 

These WOULD be changed though: $Hi, $BlaH, $ThIsIsmESseDUp, $Moo, $hI, etc.

[MadTechie]

'/(\$[^_].*?[=\'"}{])/s'

would change

<?php
$Hello = "moo";
$BLAH_Hi="cookies";
echo "TEST";
$Query = "SELECT HIGH_PRIORITY * FROM users WHERE u_userid='$vp_userid' limit 1"
$HelloPOst = $_POST['Test'].$Hello;
<script type='text/javascript'>
?>

 

to

<?php
$hello = "moo";
$blah_hi="cookies";
echo "TEST";
$query = "SELECT HIGH_PRIORITY * FROM users WHERE u_userid='$vp_userid' limit 1"
$hellopost = $_POST['Test'].$hello;
<script type='text/javascript'>
?>

 

EDIT: corrected (didn't copy the results correctly)

[SoberDude]

Um, now it's messing around with things that have _ in it (other than variables), like ENT_NOQUOTES in htmlentities. o.o Not a big problem, I found a way around that (more or less o.o).

 

Anyway, now, for echos, if you have:

 

echo "HI, $Moo COWS!!";

 

it changes to

 

echo "HI, $moo cows!!";

[MadTechie]

okay, this should work

'/(\$[^_].*?[\s=\'"}{])/s'

[SoberDude]

It still seems to do it. o.o

[MadTechie]

Solved ?

Click Topic Solved if it is

[SoberDude]

I was at school. =P I tested it quickly before leaving, and it screwed up, so I waited to get home, but it was just because I did it wrong. So far, it seems to work fine. Thank you so much for all your help!