Question

当主机更新php版本时，我的网站显示以下错误

警告：preg_match（）：在

中找不到结尾分隔符'^'

在以下代码中：

<?php
   $mid_str = " and mid != '0' and ";
   if($_REQUEST['search']){
    mysql_select_db($database_myconn, $myconn);
    $query_spages = "SELECT id, url, title, description, keywords, active, ip, catID, exp, pdate,
                   MATCH(title,description,keywords) 
                   AGAINST ('$search_str' IN BOOLEAN MODE) AS score FROM pages 
                   WHERE MATCH(title, description,keywords) 
                   AGAINST ('$search_str' IN BOOLEAN MODE) " . $mid_str . " active = 'Yes' ORDER BY score DESC"; 


}else// not search fetch rand by catid
    $query_spages = "SELECT * FROM pages where " . preg_match("^ and", "", $mid_str) . " active = 'Yes' and catID = '" . $_REQUEST['id'] . "' ORDER BY mid DESC";   

mysql_select_db($database_myconn, $myconn);
$spages = mysql_query($query_spages, $myconn) or die(mysql_error());
//$row_spages = mysql_fetch_assoc($spages);

unset($settings);
$settings = mysql_fetch_assoc(mysql_query('select * from settings where id = 1',$myconn));

?>

Answer 1

preg_match期望正则表达式的开始和结束。例如preg_match("/^ and/", "", $mid_str)。

在您的情况下，^被视为起始分隔符，但正则表达式不以^结束，因此您收到错误。开始和结束分隔符可以是任何内容，但很可能/用于不与其他特殊处理的字符冲突。

此外，您可能混淆了preg_match和preg_replace。我想你想preg_replace在这里，p.e。

$query_spages = "SELECT * FROM pages where " . preg_replace("/^ and/", "", $mid_str) . " active = 'Yes' and catID = '" . $_REQUEST['id'] . "' ORDER BY mid DESC";

preg_match（）：无结尾分隔符

1 个答案: