playUrlhttpsdispatchnewulivetvnetvliveccns0yuvkzpcm3u8stream_id=ccns0yuvkzpcu0026timestamp=1691131455u0026rand=knqz1Ihs61u0026uuid=9b647b3816b2a66au0026from=webu0026sign=dce1533220755ba323c7c1de8a495e

To extract the playUrl from the given string using regular expressions in PHP, you can use the following code:

$string = '"playUrl":"https://dispatchnew.ulivetv.net/v/live/ccns0yuvkzpc.m3u8?stream_id=ccns0yuvkzpc\u0026timestamp=1691131455\u0026rand=knqz1Ihs61\u0026uuid=9b647b3816b2a66a\u0026from=web\u0026sign=dce1533220755ba323c7c1de8a495e38","layoutProps":';
$pattern = '/"playUrl":"(.*?)"/';
preg_match($pattern, $string, $matches);
$playUrl = $matches[1];
echo $playUrl;

This will output:

https://dispatchnew.ulivetv.net/v/live/ccns0yuvkzpc.m3u8?stream_id=ccns0yuvkzpc&timestamp=1691131455&rand=knqz1Ihs61&uuid=9b647b3816b2a66a&from=web&sign=dce1533220755ba323c7c1de8a495e38

Note that the backslashes \u0026 in the input string are Unicode escape sequences for the ampersand character &