Regular Expressions

[griffen]

Hi everyone,

My first post and also my first real stab at PHP. I'm trying to parse a string out. From the URL I manged to get the size.

if (powerpoint_size=="small") { 
					psizeW="320";
					psizeH="148";
					powerpointAddress = "http://www.testurls.com/powerpoint.320.ppt";
				embedPowerPoint(powerpointAddress, psizeW, psizeH);
				} else if (powerpoint_size == "medium") {
					psizeW="480";
					psizeH="216";
					powerpointAddress = "http://www.testurls.com/powerpoint.480.ppt";
				embedPowerPoint(powerpointAddress, psizeW, psizeH);
				} else if (powerpoint_size == "fullsize") {
					psizeW="640";
					psizeH="284";
					powerpointAddress = "http://www.testurls.com/powerpoint.640.ppt";
				embedPowerPoint(powerpointAddress, psizeW, psizeH);    

				} else if (powerpoint_size == "suv") {
					psizeW="848";
					psizeH="368";
					powerpointAddress = "http://www.testurls.com/cars-tsr4_480p.ppt";
				embedPowerPoint(powerpointAddress, psizeW, psizeH);	
				}  

Then I thought I could do: ereg('"medium"(.){(.)}', $text_string, $a);

Doesn't work though. I get alot more text than what is in the if statement. I was hoping that I would then be able to extract each value that is psize and psizeH from the returned string. Not having much success. Is this the best way of doing it? What's the best way of extracting the if statement? Should I be using preg_match?

Thanks.

[Andrew_W_Peace]

Your question is too unclear....

give me the string
give me the expression you want to find inside of it

then i'll be able to help!
-peace!

[griffen]

Okay. I've got URL which contains a size (medium, small etc.). That I've managed to extract from the URL. I now need to extract all of the attributes associated with that size. So I'm looking to extract the code below if the size is medium:

psizeW="480";
psizeH="216";
powerpointAddress = "http://www.testurls.com/powerpoint.480.ppt";

Then extract each of the individual values to an array. I have the attribute labels in an array which should make life a little easier during the extraction so eventually I should have in my array:

480, 216, http://www.testurls.com/powerpoint.480.ppt

Thanks for the help.

[SQL_Maestro]

using PREG instead EREG much better..

<pre>
<?
$text=<<<EOT
psizeW="480";
psizeH="216";
powerpointAddress = "http://www.testurls.com/powerpoint.480.ppt";
EOT;
echo preg_replace('/^[^"]+"([^"]+)"[^"]+"([^"]+)"[^"]+"([^"]+)".+$/','\1, \2, \3',&$text)."\n";

// or
if(preg_match_all('/"([^"]+)"/',&$text,&$res))
  echo "{$res[1][0]}, {$res[1][1]}, {$res[1][2]}\n";

//for full text
$text=<<<EOT
if (powerpoint_size=="small") { 
          psizeW="320";
          psizeH="148";
          powerpointAddress = "http://www.testurls.com/powerpoint.320.ppt";
        embedPowerPoint(powerpointAddress, psizeW, psizeH);
        } else if (powerpoint_size == "medium") {
          psizeW="480";
          psizeH="216";
          powerpointAddress = "http://www.testurls.com/powerpoint.480.ppt";
        embedPowerPoint(powerpointAddress, psizeW, psizeH);
        } else if (powerpoint_size == "fullsize") {
          psizeW="640";
          psizeH="284";
          powerpointAddress = "http://www.testurls.com/powerpoint.640.ppt";
        embedPowerPoint(powerpointAddress, psizeW, psizeH);    

        } else if (powerpoint_size == "suv") {
          psizeW="848";
          psizeH="368";
          powerpointAddress = "http://www.testurls.com/cars-tsr4_480p.ppt";
        embedPowerPoint(powerpointAddress, psizeW, psizeH); 
        }
EOT;
$powerpoint_size='medium';
echo preg_replace('/^.+?"'.$powerpoint_size.'".*?{[^"}]+"([^"}]+)"[^"}]+"([^"}]+)"[^"}]+"([^"}]+)"[^}]+}.*$/','\1, \2, \3',preg_replace('/\s/','',&$text))."\n";

//Array results
$powerpoint_size='medium';
if(preg_match('/"'.$powerpoint_size.'".*?{[^"}]+"([^"}]+)"[^"}]+"([^"}]+)"[^"}]+"([^"}]+)"/',preg_replace('/\s/','',&$text),&$res)){
  array_shift(&$res);
  print_r($res);
  }

// or
$powerpoints=array();
if(preg_match_all('/"([^"{]+)".*?{[^"}]+"([^"}]+)"[^"}]+"([^"}]+)"[^"}]+"([^"}]+)"/',preg_replace('/\s/','',&$text),&$res)){
  for($i=0;$i<count($res[0]);$i++)
    $powerpoints[$res[1][$i]]=array(
      'psizeW'=>$res[2][$i],
      'psizeH'=>$res[3][$i],
      'powerpointAddress'=>$res[4][$i]);
  unset($res);
  print_r($powerpoints);
  }
?>

[griffen]

Thanks for your help, you made my Christmas and certainly things a little easier.

Thanks again.