In HTML page, I remove HTML comments like this
在HTML页面中,我删除了这样的HTML注释
$contentHTML = preg_replace("#(?=<!--)([\s\S]*?)-->#", "", $contentHTML);
But on a huge page for preg_replace, I got "PHP Fatal error: Allowed memory size ..."
但是在preg_replace的大页面上,我得到了“PHP致命错误:允许的内存大小......”
Perhaps, one solution, would use the non-matching group to avoid capturing text? Could someone explain how use on-matching group ?:
或许,一种解决方案是使用非匹配组来避免捕获文本?有人可以解释如何使用匹配组吗?:
Or how can I suppress HTML comments in huge page without preg_replace?
或者如何在没有preg_replace的情况下在大页面中抑制HTML注释?
1 个解决方案
#1
2
Just unroll the regex as
只需将正则表达式展开为
$contentHTML = preg_replace("#<!--[^-]*(?:-(?!->)[^-]*)*-->#", "", $contentHTML);
See the regex demo. Comapre with yours taking about 3 times as more steps as mine with a very short example.
请参阅正则表达式演示。与你的Comapre相比,你的步数大约是我的3倍,只有很短的例子。
Details:
-
<!--- start of comment -
[^-]*- 0+ non-- -
(?:-(?!->)[^-]*)*- 0+ sequences of-that is not followed with->and then 0+ non--s -
-->- comment end
[^ - ] * - 0+非 -
(?: - (?! - >)[^ - ] *)* - 0+序列 - 未跟随 - >然后0+非 - s
- > - 评论结束
#1
2
Just unroll the regex as
只需将正则表达式展开为
$contentHTML = preg_replace("#<!--[^-]*(?:-(?!->)[^-]*)*-->#", "", $contentHTML);
See the regex demo. Comapre with yours taking about 3 times as more steps as mine with a very short example.
请参阅正则表达式演示。与你的Comapre相比,你的步数大约是我的3倍,只有很短的例子。
Details:
-
<!--- start of comment -
[^-]*- 0+ non-- -
(?:-(?!->)[^-]*)*- 0+ sequences of-that is not followed with->and then 0+ non--s -
-->- comment end
[^ - ] * - 0+非 -
(?: - (?! - >)[^ - ] *)* - 0+序列 - 未跟随 - >然后0+非 - s
- > - 评论结束