How to use flock function

php flock() function is used for lightweight advisory file locking.

php flock() function syntax

Function: lock or release the file.

Syntax:

flock(file,lock,block)

Parameters:

file Required. Specifies an open file to be locked or released.

lock Required. Specifies which lock type to use.

block Optional. If set to 1 or true, blocks other processes while locking.

Note: The file operated by flock() must be an open file pointer.

php flock() function example

This article is an introduction to the PHP flock function. I hope it will be helpful to friends in need!

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