1:解密
function decode($buffer) { $decoded = ''; $len = ord($buffer[1]) & 127; if ($len === 126) { $masks = substr($buffer, 4, 4); $data = substr($buffer, 8); } else if ($len === 127) { $masks = substr($buffer, 10, 4); $data = substr($buffer, 14); } else { $masks = substr($buffer, 2, 4); $data = substr($buffer, 6); } for ($index = 0; $index < strlen($data); $index++) { $decoded .= $data[$index] ^ $masks[$index % 4]; } return $decoded; }
2:加密
function encode($msg) { $frame = []; $frame[0] = '81'; $len = strlen($msg); if ($len < 126) { $frame[1] = $len < 16 ? '0' . dechex($len) : dechex($len); } else if ($len < 65025) { $s = dechex($len); $frame[1] = '7e' . str_repeat('0', 4 - strlen($s)) . $s; } else { $s = dechex($len); $frame[1] = '7f' . str_repeat('0', 16 - strlen($s)) . $s; } $data = ''; $l = strlen($msg); for ($i = 0; $i < $l; $i++) { $data .= dechex(ord($msg[$i])); } $frame[2] = $data; $data = implode('', $frame); return pack("H*", $data); }