I have a bit of php code like this:
$test = "<!--my comment goes here--> Hello World";
Now i want to strip the whole html comment from the string, i know i need to use preg_replace, but now sure on the regex to go in there. Can anybody help? Thanks
$str=<<<'EOF'
<!--my comment goes here--> Hello World"
blah <!-- my another
comment here --> blah2
end
EOF;
$r="";
$s=explode("-->",$str);
foreach($s as $v){
$m=strpos($v,'<!--');
if($m!==FALSE){
$r.=substr($v,1,$m);
}
}
$r.=end($s);
print $r."\n";
output
$ php test.php
Hello World"
blah < blah2
end
Or if you must preg_replace,
preg_replace("/<!--.*?-->/ms","",$str);
preg_replace('/<!--(.*)-->/Uis', '', $html)
Will remove every html comment contained in the $html string. Hope this helps!
Try
preg_replace('~<!--.+?-->~s', '', $html);
Those will only work if you dont have 2 comments with content between like ...
<!--comment--> Im a goner <!--comment-->
You need ...
//preg_replace('/<!--[^>]*-->/', '', $html); // <- this is incorrect see ridgrunners comments below, you really need ...
preg_replace('/<!--.*?-->/', '', $html);
The [^>] matches anything but > so as to not go past the matching > seeking the next. I havent tested phps regex but it claims to be perl regex which is by default 'greedy' and will match as much as possible.
But since youre matching a specifically named placeholder you just need the entire string and to use str_replace() instead.
str_replace('<!--my comment goes here-->', $comment, $html);
And, rather than replacing placeholders in a file just make it a php file and write out the variables.
:)
> is allowed and is perfectly valid inside a comment. The .*? lazy-dot-star is actually the better expression in this case (and does not remove the "Im a goner" text as you infer),<?php
$test = "<!--my comment goes here--> Hello World";
echo preg_replace('/\<.*\> / ','',$test);
?>
Use the following code for global replace:
<?php
$test = "<!--my comment goes here--> Hello World <!--------welcome-->welcome";
echo preg_replace('/\<.*?\>/','',$test);
?>
This should do it for you
preg_replace("/<\!--.*?-->/s","",$html);
