Preg_Match 无法正常工作

Question

出于某种原因，这（乱七八糟的东西）不起作用..它很乱，因为我改变了很多以找出问题所在..

问题：preg_match("/\"h4(.*?)/h4/s", $theMAGICresult, $output_game);

我知道比赛有效..（通常）；我确实检查了 http://www.phpliveregex.com/。我在foreach循环，while循环中做到了.. 我尝试 preg_match_all .. 我提供了一个正确的模式，一个正确的字符串 对于主题，我把它放在一个正确的数组中并获取它，但它是 空..在找到答案2小时后我放弃了..你能帮我吗 ??

preg_match_all("/<li class=\"completed\">(.*?)<\/li>/s", $all, $output);
/* $all contains something like        xx <li class="completed"> xxxx"h4GOLDFISH/h4xxxxxx</li>xxxxxxxxxxxx */
$arrayLoop = array(); //makes sure it's an array
$arrayLoop = $output[0]; // makes $output[0] the default array

//$arrayLoop[0] is now <li class="completed"> xxxx"h4GOLDFISH/h4xxxxxx</li>
$i = 1; //while loop because, had first foreach loop etc..
while($i < count($arrayLoop)) {
$theMAGICresult = $arrayLoop[$i]; // to be sure $arrayLoop[$i] is valid

//theMAGICresult is now : <li class="completed">xx"h4GOLDFISH/h4xxxxxx</li>
preg_match("/\"h4(.*?)\/h4/s", $theMAGICresult, $output_game);

echo $output_game[1]; //is nothing while is should have GOLDFISH

    $i++;
}
print_r($output_game); //empty array

Answer 1

尝试：

preg_match("/\\"h4(.*?)\/h4/s", $input_line, $output_array);

固定示例：

$output_game = [];
$theMAGICresult = '<li class="completed">xx"h4GOLDFISH/h4xxxxxx</li>';
preg_match('/\"h4(.*?)\/h4/s', $theMAGICresult, $output_game);
var_dump($output_game);