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<?php |
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/** |
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* @author jyamin |
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*/ |
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namespace FMUP; |
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class Socket |
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{ |
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/** @var resource $socket */ |
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protected $socket; |
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/** @var int $errorNumber */ |
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protected $errorNumber; |
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/** @var string $errorString */ |
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protected $errorString; |
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/** |
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* @param $host |
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* @param $port |
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* @return $this |
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*/ |
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public function connect($host, $port, $timeout = null) |
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{ |
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if (!$timeout) { |
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$timeout = ini_get('default_socket_timeout'); |
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} |
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$this->socket = $this->phpFSockOpen($host, $port, $this->errorNumber, $this->errorString, $timeout); |
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return $this; |
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} |
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/** |
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* @return bool |
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*/ |
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public function isConnected() |
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{ |
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return (bool)$this->socket; |
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} |
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/** |
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* @param $str |
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* @param int|null $length |
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* @return int |
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*/ |
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public function write($str, $length = null) |
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{ |
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if ($length) { |
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return $this->phpFWrite($this->socket, $str, $length); |
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} |
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return $this->phpFWrite($this->socket, $str); |
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} |
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/** |
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* @param $length |
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* @return string |
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*/ |
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public function read($length) |
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{ |
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return $this->phpFRead($this->socket, $length); |
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} |
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/** |
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* @return int |
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*/ |
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public function getErrorNumber() |
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{ |
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return $this->errorNumber; |
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} |
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/** |
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* @return string |
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*/ |
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public function getErrorString() |
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{ |
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return $this->errorString; |
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} |
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/** |
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* @param string $host |
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* @param int $port |
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* @param int $errno |
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* @param string $errstr |
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* @param float $timeout |
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* @return resource |
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* @codeCoverageIgnore |
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*/ |
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protected function phpFSockOpen($host, $port, $errno, $errstr, $timeout) |
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{ |
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return fsockopen($host, $port, $errno, $errstr, $timeout); |
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} |
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/** |
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* @return int |
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* @codeCoverageIgnore |
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*/ |
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protected function phpFWrite() |
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{ |
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return call_user_func_array('fwrite', func_get_args()); |
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} |
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/** |
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* @param resource $handle |
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* @param int $length |
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* @return string |
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* @codeCoverageIgnore |
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*/ |
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protected function phpFRead($handle, $length) |
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{ |
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return fread($handle, $length); |
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} |
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/** |
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* @param resource $handle |
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* @return bool |
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* @codeCoverageIgnore |
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*/ |
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protected function phpFClose($handle) |
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{ |
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return fclose($handle); |
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} |
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} |
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In PHP, under loose comparison (like
==
, or!=
, orswitch
conditions), values of different types might be equal.For
integer
values, zero is a special case, in particular the following results might be unexpected: