Parsing a string

Anon

I am opening an html file. Stripping out the html tags with the exception of <table> and <tr><td> tags. Then I want to do an ereg_replace however, I can not figure out a regular expression to change all table tags... Some of the tags have values like

<TABLE CELLSPACING=0 BORDER=0 CELLPADDING=0 WIDTH=500> or
<TABLE CELLSPACING=0 BORDER=0 CELLPADDING=6 WIDTH=700>..

and I guess the most efficient way to remove them is to use regular expressions. Can someone tell me what I am doing wrong here?

thanks.. here is the code.

<?
$string = fopen("dmo0130.html", "r");

$string2 = "";
while (!feof($string)) {
$temp = fgets($string,4096);
$string2 ="$string2$temp";
}
fclose ($string);

	//echo $string2;


	//$first = strpos($string2,"<TABLE");
	//$string3 = substr ($string2 , $first , 6);
	//$last = strpos($string2,">" , $first + 5);
	//$string3 = substr ($string2 , $first , $last - $first +1);
	//echo " $first  $last \n";
   //echo $string3;
	//$string3 = ereg_replace("$string3", "<TABLE CELLSPACING=0 BORDER=0 CELLPADDING=7 WIDTH=100%>", $string2);

//echo $string3;

$string3 = strip_tags($string2,"<table>,<tr><td></td></tr></i><b></b><p><br><h1></h1><i>");
//string4 = ereg_replace("/(<)(TABLE CELLSPACING=([0-9]) BORDER=([0-9]) CELLPADDING=([0-9]) WIDTH=([0-9]))(>)/", "<TABLE CELLSPACING=0 BORDER=0 CELLPADDING=7 WIDTH=80%>", $string3);


string4 = ereg_replace("/(<)(TABLE)([a-zA-Z0-9])*(>)/", "<TABLE CELLSPACING=0 BORDER=0 CELLPADDING=7 WIDTH=80%>", $string3);

//$string3 = ereg_replace("<TABLE CELLSPACING=0 BORDER=0 CELLPADDING=0 WIDTH=500>", "<TABLE CELLSPACING=0 BORDER=0 CELLPADDING=7 WIDTH=100%>", $string3);

echo $string4,"\n";

//<TABLE\s/([a-zA-Z]\W[0-9])[*>)/
//}

Anon

Umm...you want to change the values of those TABLE tags' attributes, or just want to get rid of the TABLE tags?

If you have the preg_* functions available to you, I can give you a regexp that'll work.

Anon

Well, I want to change all the values of the table tags... I tried preg_replace too.. so that it replaces all <table> tags with a tag that I define..

Sure, zap me the code..

Ray

Anon

preg_replace(
"/(?:<(?:\/?)TABLE).*>/ig",
$replacement_string,
$target_string);

Works for me in Perl

Anon

Hmm tried it in php and I had a parse error. I know I am asking for alot here.. But what does the "ig" mean?

Here is the code again..
<?
$string = fopen("dmo0130.html", "r");

$string2 = "";
while (!feof($string)) {
$temp = fgets($string,4096);
$string2 ="$string2$temp";
}
fclose ($string);

$replacement_string ="<TABLE CELLSPACING=0 BORDER=0 CELLPADDING=7 WIDTH=80%>";

$string3 = strip_tags($string2,"<table>,<tr><td></td></tr></i><b></b><p><br><h1></h1><i>");

echo $string3, "<P>";

string4 = preg_replace("/(?:<(?:\/?)TABLE).*>/ig",$replacement_string,$string3); 


echo $string4,"\n";

Anon

Kyle,
Thanks for getting me on the right track. I Had to play with the ereg a bit to make it work with PHP. Also, notice that you included removing the </table> with this bit <?:\/?) . I got rid of that.. Anyways, if there is anything that I can do for you, let me know.

here is the final code..

<?
//resets tabe size

$string = fopen("yourfile.html", "r");

$string2 = "";
while (!feof($string)) {
$temp = fgets($string,4096);
$string2 ="$string2$temp";
}
fclose ($string);

$replacement_string ="<TABLE CELLSPACING=0 BORDER=0 CELLPADDING=0 WIDTH=80%>";

$string3 = strip_tags($string2,"<table><tr><td></td></tr></table><div></div></i><b></b><p><br><h1></h1><i>");
$string4 = preg_replace("/(?:<TABLE).*>/","$replacement_string",$string3); 



echo $string4,"\n";

Anon

No problem. I wasn't sure if you wanted end </> tags removed as well, so I just included that. BTW, the /ig at the end of the preg_replace (in the Perl world) tells the pattern to be case-insensitive and to work globally. I guess PHP doesn't understand that. 🙂