<?
$a = "{{abc}}kadkfk[[img]]";
$pa = array("'\{\{(.*?)\}\}'si","'\[\[(.*?)\]\]'si");
$ra = array("<a href='\\1'>\\1</a>","<img src='\\1'>\\1");
$new_a = preg_replace($pa,$ra,$a);
echo $new_a;
?>
//{{}}替换链接,[[]]替换成图片
$a = "{{abc}}kadkfk[[img]]";
$pa = array("'\{\{(.*?)\}\}'si","'\[\[(.*?)\]\]'si");
$ra = array("<a href='\\1'>\\1</a>","<img src='\\1'>\\1");
$new_a = preg_replace($pa,$ra,$a);
echo $new_a;
?>
//{{}}替换链接,[[]]替换成图片
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