這篇文章主要介紹了php使用多個進程同時控制文件讀寫示例,需要的朋友可以參考下
代碼如下: <?php /** * 寫入數據 * @param [string] $path [文件路徑] * @param [string] $mode [文件打開模式] * @param [string] $data [數據] * @return [bool] */ function writeData($path, $mode, $data){ $fp = fopen($path, $mode); $retries = 0; $max_retries = 100; do { if ($retries > 0) { usleep(rand(1, 10000)); } $retries += 1; }while (!flock($fp, LOCK_EX) and $retries <= $max_retries); if ($retries == $max_retries) { return false; } fwrite($fp, $data."rn"); flock($fp, LOCK_UN); fclose($fp); return true; } /** * 讀數據 * @param [string] $path [文件路徑] * @param [string] $mode [文件打開模式] * @return string */ function readData($path,$mode){ $fp = fopen($path, $mode); $retries = 0; $max_retries = 100; do { if ($retries > 0) { usleep(rand(1, 10000)); } $retries += 1; }while (!flock($fp, LOCK_SH) and $retries <= $max_retries); if ($retries == $max_retries) { return false; } $contents = ""; while (!feof($fp)) { $contents .= fread($fp, 8192); } flock($fp, LOCK_UN); fclose($fp); return $contents; } writeData('D:/webServer/demo.txt','a+','this is a demo'); echo readData('D:/webServer','r+');
