例子1 $str = "<b>example: </b><div align=left>this is a test</div>";

$p = "|<[^>]+>(.*?)</[^>]+>|i";  能帮我解释下么？为什么运行结果进行匹配了两次~

Array (    [0] => Array        (            [0] => example:             [1] =>

this is a test

)    [1] => Array        (            [0] => example:             [1] => this is a test        ) )