preg functions and square brackets

necrotic posted this at 19:09 — 6th July 2003.

Joined: May 2002

Hello,

EDIT: I figured out a way around it without using any preg functions. It'd still be nice to know how I could do it.

I'm using preg_match and preg_replace to split a varibale. The variable can be in two forms: FOO[BAR]=NUM or FOO=NUM. My problem is the brackets in the first form (FOO[BAR]=NUM). I have a small script to TRY and get it to work but it isn't. Any ideas?

URL: http://necrotic.anitrade.net/test.php
Script:

<?php
$var[] = \"USER[POST]=10\";
$var[] = \"BOSS=1\";

foreach($var as $this) {
  if (!preg_match(\"/[\",$this)) {
    $inpho = explode(\"=\",$this);
    $info[] = Array (
             '1' => $inpho[0],
             '2' => $inpho[1],
      );
  } else {
    $inpho = explode(\"=\",$this); // inpho[0] = USER[POST], inpho[1] = 10
    $in2 = explode(\"[\",$inpho[0]); // in2[0] = USER, in2[1] = POST]
    $in3 = explode(\"]\",$in2); // in3[0] = POST, in3[1] = ]
    $info[] = Array (
             '1' => $inpho[0],
             '2' => $in2[0],
             '3' => $in3[0],
      );
  }
}

foreach($info as $foo ) {
  if ($foo['3'] != '') {
    echo $foo['1'].\"<br>\".$foo['2'].\"<br>\".$foo['3'].\"<p>\";
  } else {
    echo $foo['1'].\"<br>\".$foo['2'].\"<p>\";
  }
}
?>

Any help you can provide would be most excellent.

Thanks,
necrotic

[James Logsdon]

Mark Hensler posted this at 01:43 — 7th July 2003.

He has: 4,048 posts

Joined: Aug 2000

<?php
$var[] = \"USER[POST]=10\";
$var[] = \"BOSS=1\";
$var[] = \"USER[POST][TEST]=10\";
$var[] = \"USER['POST'][\\\"TEST\\\"]=10\";

foreach($var as $this) {
  unset($val);
  
  list($this, $val[]) = explode('=', $this);
  
  while (preg_match('/^([a-zA-Z_\\x7f-\\xff][a-zA-Z0-9_\\x7f-\\xff]*)(\\[([\\'\"])?([a-zA-Z_\\x7f-\\xff][a-zA-Z0-9_\\x7f-\\xff]*)(?(3)\\3)\\])?(.*)/', $this, $match)) {
    $val[] = $match[1];
    $this = $match[4].$match[5];
  }
  
  $info[] = $val;
}

foreach($info as $foo ) {
  echo implode(\"<br />\", $foo) . \"<p>\\n\";
}
?>

Mark Hensler
If there is no answer on Google, then there is no question.

necrotic posted this at 17:12 — 7th July 2003.

He has: 296 posts

Joined: May 2002

Awesome. I need to read more about the preg functions and all the uses.

One thing had to be changed:

<?php
preg_match('/^([a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*)(\[(['\"])?([a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*)(?(3)\3)\])?(.*)/
?>

The section (\[(['"]) needs to be (\[([\'\"]).

[James Logsdon]

Mark Hensler posted this at 17:34 — 7th July 2003.

He has: 4,048 posts

Joined: Aug 2000

grr..

vB2 has a problem with escaping things. I had to double escape everything, and I guess I missed that one. Good eye!