PHP regular expression to replace the solution to the blank space after the site keyword link, regular expression keyword_PHP tutorial

Solution to PHP regular expression replacement of blank space after site keyword link, regular expression keyword

I don’t know if this title is appropriate or not. The specific situation is this: the website wants to add a keyword link function, and then the content of the article needs to be matched and replaced with regular expressions, and then the preg_replace function is used. The replaced program code is as follows:

function ReplaceKeyword($linkDefs,$content){
$linkMap = array();

/*foreach($linkDefs as $row) {
$linkMap[] = explode(',', $row);
}*/
$linkMap = $linkDefs;

//把原有的链接替换成文字
foreach($linkMap as $row) {
$content = preg_replace('/(<a.*&#63;>\s*)('.$row[0].')(\s*<\/a>)/sui', $row[0], $content);
}

//关键字从长至短排序
usort($linkMap, '_sortDesc');
//var_dump($linkMap);

$tmpKwds = array(); //存放暂时被替换的子关键字

$k_count=0;
foreach($linkMap as $i=>$row) {
list($kwd, $url) = $row;
for($j=$i+1; $j<count($linkMap); $j++) {
$subKwd = $linkMap[$j][0];
//如果包含其他关键字，暂时替换成其他字符串，如 茶叶 变成 
if(strpos($kwd, $subKwd) !== false) {
$tmpKwd = '';
$kwd = str_replace($subKwd, $tmpKwd, $kwd);
$tmpKwds[$tmpKwd] = $subKwd;
}
}
//把文字替换成链接
require(MLEINC.'/config/globals.config.php');
$th_num = $config['keyword_num']; //关键字替换次数
$content = preg_replace('/('.$row[0].')/sui', '<a href="'.$row[1].'">'.$kwd.'</a>', $content, $th_num ,$count); // 所有的匹配项都会被替换
$k_count+=$count;
}

//把代替子关键字的字符串替换回来
foreach($tmpKwds as $tmp=>$kwd) {
$content = str_replace($tmp, $kwd, $content);
}
$result = array($content,$k_count);

return $result;
unset($result);
unset($tmp);
unset($tmpKwds);
unset($kwd);
unset($count);
unset($config);
unset($linkMap);
unset($linkDefs);
unset($tmpKwd);
unset($content);
unset($th_num);
unset($row);
unset($k_count);
}

The program was found online and tested locally. It was normal. The local environment was PHP 5.3 and the service was 5.2. After uploading it to the Internet, the submission showed blank. At first, I thought it was a PHP version problem and thought it was ereg. The difference between preg, it still doesn’t work after replacement. Later, when I looked online, I found that some netizens said that just adjusting the pcre.backtrack_limit and pcre.recursion_limit would be enough. I tried it, and it worked. It seems to be a configuration problem, but under normal circumstances, the default configuration of PHP should be fine. The program I wrote myself is still not good enough!

php regular expression problem, here is a program that replaces keywords with links

I can write like this. I have tried it with IE6 and FIREFOX 3.0, and there is no problem.
05fa6ed139b2521231f706e9ff0ef818
6a74014ee44f5deb5894267f99b68016
ef1cac8df639bc9110cb13b8b5ab3dd7
08eb756f81b28a01d33212cce3fbe742 New Document < ;/TITLE>
8d9c38ecb69cade51cea376b1c4aceb5
817bd0c437a10b0c378b1a4985102dfa
f1beef59c62422721e46dcbaa5527fc0
cb2b66fcc177982dd415108de4dd76a6
34934661d7147ca926b095899343bad0

a64997a0904a094b4570728d7f327acd
Xhtml Linux
< ;/BODY>
c213752d78643de9c16ab108c0325b4f
document.body.innerHTML = document.body.innerHTML.replace(/(x)|(l)/gi,"53c8b6bd5e8fbedb03be926239956d6f$1$2e6e38b3c62e8df885fe2e3986461aa63");
2cacc6d41bbb37262a98f745aa00fbf0
6eac519e8537e4205ddd37e30a7b548a

The following is the innerHTM of BODY obtained through FIREFOX 3.0
479ca8b39fdf696d3270f4d9e82e639eXe6e38b3c62e8df885fe2e3986461aa63htm8121d6c8a34839335b283c3765c68ed6le6e38b3c62e8df885fe2e3986461aa63 ">xe6e38b3c62e8df885fe2e3986461aa63
3f1c4e4b6b16bbbd69b2ee476dc4f83ac858d69dd81008e347cd5f5447f8e393le6e38b3c62e8df885fe2e3986461aa63anguage="JavaScript">
document.body.innerHTMc858d69dd81008e347cd5f5447f8e393Lec1fca601d556412b20078a19c015a83 = document.body.innerHTMc858d69dd81008e347cd5f5447f8e393Le6e38b3c62e8df885fe2e3986461aa63.repc858d69dd81008e347cd5f5447f8e393le6e38b3c62e8df885fe2e3986461aa63ace(/(c858d69dd81008e347cd5f5447f8e393xe6e38b3c62e8df885fe2e3986461aa63) |(c858d69dd81008e347cd5f5447f8e393le6e38b3c62e8df885fe2e3986461aa63)/gi,"$1$2>

PHP regular expression replacement hyperlink

Use str_replace function

http://www.bkjia.com/PHPjc/879721.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/879721.htmlTechArticlePHP regular expression to replace the solution to the blank after the site keyword link, the regular expression keyword title is so unknown Suitable or not. The specific situation is this: the website needs to add custom...