php lock file

PHP program in the file lock, mutex, read and write the use of skills analysis, File lockFull name advisory file lock, which is mentioned in the book. This type of lock is more common, such as MySQL, after php-fpm boot, there will be a PID file

PHP File processing advanced application-file pointer php can implement the positioning of the file pointer and query, so as to achieve the required information fast query, the file pointer function has rewind (), fseek (), feof () and Ftell ()

This article mainly introduced the PHP program in the file lock, mutual exclusion lock, read-write lock using skills analysis, which focuses on the Sync module and pthreads module use examples, the need for friends can refer to. We hope to help you.

File lockThe name is advisory file lock, which is mentioned in the book. This type of lock is more common, such as MySQL, PHP-FPM Boot will have a PID file records the process ID, this file is a file lock. This lock prevents a process from running

A large number of files need to be processed. Using a php process will be slow. How to lock a file when a process reads a file. Do not allow other processes to read and directly skip this step. Do you want to continue reading other processes? Rename

$file = "Temp.txt"; $fp = fopen ($file, ' w '); if (Flock ($FP, lock_ex)) { Fwrite ($fp, "abc\n"); Sleep (10); Fwrite ($fp, "123\n"); Flock ($FP, lock_un); } Fclose ($FP);

The script house editor will explain how to use the file lock function flock function in php. I hope you can learn more about flock in Linux through this article. (PHP 4, PHP 5) Flock-lightweight consultation file locking Description Bool flock

How to use php file locks? Php file lock tutorial $ File = "temp.txt "; $ Fp = fopen ($ file, 'w '); If (flock ($ fp, LOCK_EX )){ Fwrite ($ fp, "abc \ n "); Sleep (10 ); Fwrite ($ fp, "123 \ n ");

PHPflock file lock details. Flock (PHP4, PHP5) flock-description of boolflock (int $ handle, int $ operation [, intlt ;? Php?fpfopen(tmplock.txt, w +); if (flock ($ fp, LOCK_EX flock (PHP 4, PHP 5) Flock-lightweight consultation file

This article is mainly to share with you the PHP file lock concurrency operation, the default: PHP file operation function, not blocking state, but free operation State, hope to help everyone. Conditions: A file lock is required when a script