while统制循环次数出错【help】
while控制循环次数出错【help】
上代码...下面代码有点问题.本来想用$i控制输出次数.但是替换一次就break;
想了半天无解.
求帮助...谢谢...
- PHP code
<!-- Code highlighting produced by Actipro CodeHighlighter (freeware) http://www.CodeHighlighter.com/ --> //替换关键字 function ReplaceKey($newstext){ global $empire,$dbtbpre,$public_r; if(empty($newstext)) {return $newstext;} $sql=$empire->query("select keyname,keyurl from {$dbtbpre}enewskey"); $i=0; while($r=$empire->fetch($sql)) { if($i '.$r[keyname].'',$newstext):preg_replace('/'.$r[keyname].'/','<a href=".%24r%5Bkeyurl%5D." target="_blank">'.$r[keyname].'</a>',$newstext,$public_r[repkeynum]); } else break; $i++; } return $newstext; }
------解决方案--------------------
能确认查询结果就一定大于5吗
------解决方案--------------------
个人认为你的调试有问题,结果并不是你说的那样只替换了一次
$public_r[repkeynum]的值在函数运行期间并没有改变,那么就一定不会执行else分支
------解决方案--------------------
代码控制过程应该没问题,有问题的应该是在
$newstext=empty($public_r[repkeynum])?str_replace($r[keyname],''.$r[keyname].'',$newstext):preg_replace('/'.$r[keyname].'/',''.$r[keyname].'',$newstext,$public_r[repkeynum]);
这个部分.
所以似乎应该修改成 $newstext.=xxxx 返回的字符串才是你最终想要的目的吧.

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