php使用多個進程同時控制檔案讀寫樣本_PHP教程

複製代碼 代碼如下:
/**
* 寫入資料
* @param [string] $path [檔案路徑]
* @param [string] $mode [檔案開啟模式]
* @param [string] $data [資料]
* @return [bool]
*/
function writeData($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, $data."\r\n");
flock($fp, LOCK_UN);
fclose($fp);
return true;
}

/**
* 讀資料
* @param [string] $path [檔案路徑]
* @param [string] $mode [檔案開啟模式]
* @return string
*/
function readData($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+');

http://www.bkjia.com/PHPjc/736838.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/736838.htmlTechArticle複製代碼 代碼如下: ?php /** * 寫入資料 * @param [string] $path [檔案路徑] * @param [string] $mode [檔案開啟模式] * @param [string] $data [資料] * @return [b...

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