$text = preg_replace("<img src=\"(.+?)\">/ies", "[img]$1[/img]", $text);
$text = preg_replace("/\<img src=\"(.+?)\"  width=\"(\d+)\" height=\"(\d+)\">/ies", "[img=$2,$3]$1[/img]", $text);
$text = preg_replace("/\<font size=\"(\d+)\" color=\"(.+?)\">\s*(.+?)\s*\</font>/ies", "[size=$1][color=$2]$3[/color][/size]", $text);

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$text = preg_replace("/\<img src=\"(.+?)\">/ies", "[img]$1[/img]", $text);

$text = preg_replace("/\<img src=\"(.+?)\">/ies", "/[img/]$1/[/\img/]", $text);

<?
$text = '<img src="http://www.alan888.com/Discuz/images/air/logo.gif"><br />';
$text .= '<img src="http://www.alan888.com/Discuz/images/air/logo.gif" width="50" height="9"><br />';
$text .= '<font size="100" color="blue">alan888</font>';
$pattern = array("/<img src=\"([^\<\>\"]*)\">/i",
                 "/<img src=\"([^\<\>\"]*)\" width=\"(\d+)\" height=\"(\d+)\">/i",
                 "/<font size=\"(\d+?)\" color=\"([^\<\>\"]+?)\">/i",
                 "/<\/font>/i");
$replacement = array("[img]\\1[img]",
                     "[img=\\2,\\3]\\1[img]",
                     "[size=\\1][color=\\2]",
                     "[/color][/size]");
echo preg_replace($pattern, $replacement, $text);
?>

[img]http://www.alan888.com/Discuz/images/air/logo.gif[img]
[img=50,9]http://www.alan888.com/Discuz/images/air/logo.gif[img]
[size=100][color=blue]alan888[/color][/size]

原帖由 旗仔 於 7-17-08 10:22 PM 發表
回覆 #8 bananasims 的帖子
其實我覺得pcre幾好玩的, 玩多幾次就熟
回覆 #9 1224 的帖子
我唔知你用途, 只係幫你寫返個pcre, 其他的靠你寫吧

$pattern = array("/\[img\]([^\<\>\"]*)\[\/img\]/ies"
);

$replacement = array("<img src=\"\\1\">"
);

$text = preg_replace($pattern, $replacement, $text);