$str="<img src=\"C:/aaa.jpg\" width=\"50\" height=\"16\" BORDER=0>";preg_match("/<img src=\"(.*)\" width=\"\d+\" height=\"\d+\" BORDER=\d+>/i",$str,$arr);
echo "<pre>";
print_r($arr[1]); //$arr[0]为原字符串 $arr[1]你是要取得的
echo "</pre>";
$replace="d:/888.jpg";
$s= preg_replace("/(<img src=\").*(\" width=\"\d+\" height=\"\d+\" BORDER=\d+>)/e","'\\1'.'$replace'.'\\2'",$str);
print_r($s);
exit;
echo "<pre>";
print_r($arr[1]); //$arr[0]为原字符串 $arr[1]你是要取得的
echo "</pre>";
$replace="d:/888.jpg";
$s= preg_replace("/(<img src=\").*(\" width=\"\d+\" height=\"\d+\" BORDER=\d+>)/e","'\\1'.'$replace'.'\\2'",$str);
print_r($s);
exit;
'<img src="'.'d:/888.jpg'.'" width="50" height="16" BORDER=0>'怎么回事啊?
<?
$str="<img src=\"C:/aaa.jpg\" width=\"50\" height=\"16\" BORDER=0>";preg_match("/<img src=\"(.*)\" width=\"\d+\" height=\"\d+\" BORDER=\d+>/i",$str,$arr);
echo "<pre>";
print_r($arr); //$arr[0]为原字符串 $arr[1]你是要取得的
echo "</pre>";$replace="d:/888.jpg";
$str = preg_replace("/(<img src=\").*(\" width=\"\d+\" height=\"\d+\" BORDER=\d+>)/s","\\1$replace\\2",$str);
print_r($str);
exit;
?>谢谢高手!我就是正则学不好啊,给分给分!
echo $str;
也可以