reading strings in a html file

Spud_Nic

I want to be able to read a particular file, say file.html for example, and search code to see if there is a comment that begins with "" then output it.

i've been having a play on with no success! I've tried strstr(), preg_match() functions.

am i right to use the following code to read the code?

$fileread = "file.html";
$fd = fopen ("$fileread", "r+");
while (!feof ($fd)) {
$buffer = fgetc($fd);
}
fclose ($fd);

or is there a better way to do it?

so just to recap, if in a html page there was one line of code that said

I'd want "This is a comment" to be outputted.

if anyone can help, that'd be great. cheers

Weedpacket

Well, apart from the fact that fgetc is about the slowest way possible to read from a file, you're only storing one character in $buffer at a time. As soon as you read the second character in the file you throw away the first.

So with only a one-character string to search, it's no wonder that you're not finding "<!--C" in it.

$fileread = "file.html";
$fd = fopen ($fileread, "r+");
while (!feof ($fd)) {
$buffer .= fgets($fd,128);
}
fclose ($fd);

Spud_Nic

thanks for pointing that out!

but how can I get the string between the comment tags?

superwormy

strstr()
Regular Expressions
strpos()
substr()

But fix the problem Weedpacket pointed out first!

HalfaBee

Try this

$data = filegetcontents( $filename );
$count = preg_match( "/<!--C.*?-->/",$data,$matches );
if( $count )
 print_r( $matches )
else
 echo "No Matches";

HalfaBee

tekky

$data = file_get_contents( $filename ); //added _'s
$count = preg_match( "/<!--C.*?-->/",$data,$matches );
if( $count )
 print_r( $matches ); //added ;
else
 echo "No Matches";

didnt work...

it outpus...

Array ( [0] => )

(I been fighting with EREGI() on this all day... and cant get it to match.... grumble)

tekky

consequently...

<?
$file = file_get_contents('karl_test.txt');
echo '<textarea cols=50 rows=10>'.$file.'</textarea><br>';

if (eregi('<!--C[ *](.*)[ *]-->[ *]', $file, $regs))
	print_r( $regs);
else
	echo "<br>No matches on eregi()";

karl_test.txt

or is there a better way to do it?

so just to recap, if in a html page there was one line of code that said

I'd want "This is a comment" to be outputted.

if anyone can help, that'd be great. cheers

however this wont work with multiple comments.... would have to use $file = file(filename); and loop through each line... or use explode('-->',$file); so you get each comment on a line by itself...

superwormy

Get contents into a string.

stristr() for the first <!--C

strpos() for the -->

substr() 0, strpos()

Done.

HalfaBee

This also works

<?
$filename= 'test.html';
$data = file_get_contents( $filename ); //added _'s
$count = preg_match( "/.*?<!--C (.*?) -->.*/i",$data,$matches );
if( $count ) {
    echo "<pre>count='".htmlspecialchars($count)."' $data=".htmlspecialchars($data);
    print_r( $matches ); //added ;
}
else
    echo "No Matches";

?>