README

This extension changes the current time in PHP to a specified modified value.

Warning

DO NOT USE THIS EXTENSION IN ANY PRODUCTION ENVIRONMENT!!!

At present, this extension is effective for the following functions:

• Any built-in PHP processing that handles the current time (ext-date)
• NOW() and many statements in MySQL or compatible DBMS via PDO
• Server environment variables for request time (e.g. $_SERVER['REQUEST_TIME'])

Install

Clone the repository with submodules and build the extension.

$ git clone --recursive "https://github.com/colopl/php-colopl_timeshifter.git" "colopl_timeshifter"
$ cd "colopl_timeshifter/ext"
$ phpize
$ ./configure --with-php-config="$(which php-config)"
$ make -j"$(nproc)"
$ TEST_PHP_ARGS="--show-diff -q" make test
$ sudo make install

Enable the extension after installation.

$ echo "extension=colopl_timeshifter" | sudo tee "$(php-config --ini-dir)/99-colopl_timeshifter.ini"
$ php -m | grep "colopl_timeshifter"
colopl_timeshifter

Build Ubuntu 22.04 packages

Ubuntu 22.04 packages are built with standard Debian packaging via dpkg-buildpackage, not checkinstall. The packaging definitions live under build/ubuntu2204/debian and build/ubuntu2204_sury84/debian.

Build packages for the official Ubuntu 22.04 PHP 8.1 stack:

$ docker build -f "build/ubuntu2204/Dockerfile" -t "colopl-timeshifter-u2204-php81" .
$ mkdir -p "artifacts"
$ docker run --rm -e VERSION="x.y.z" -v "$(pwd)/artifacts:/tmp/artifacts" "colopl-timeshifter-u2204-php81"

This target produces php-colopl-timeshifter and php8.1-colopl-timeshifter together with the corresponding .changes and .buildinfo files.

Build packages for Ubuntu 22.04 with the Ondrej Sury PHP 8.4 repository:

$ docker build -f "build/ubuntu2204_sury84/Dockerfile" -t "colopl-timeshifter-u2204-php84" .
$ mkdir -p "artifacts"
$ docker run --rm -e VERSION="x.y.z" -v "$(pwd)/artifacts:/tmp/artifacts" "colopl-timeshifter-u2204-php84"

This target produces php8.4-colopl-timeshifter together with the corresponding .changes and .buildinfo files.

PHP Library

The Composer package is the recommended interface from application code.

$ composer require --dev "colopl/colopl_timeshifter"

Use Colopl\ColoplTimeShifter\Manager as a support class.

INI directives

colopl_timeshifter.is_hook_pdo_mysql

Type: bool Default: true Run-time switchable: No (PHP_INI_SYSTEM)

Enables or disables the hook into \PDO::__construct to swap the current time in MySQL function and keywords such as NOW() and CURRENT_TIMESTAMP.

colopl_timeshifter.is_hook_request_time

Type: bool Default: true Run-time switchable: No (PHP_INI_SYSTEM)

Selects whether to hook the $_SERVER superglobals REQUEST_TIME and REQUEST_TIME_FLOAT.

colopl_timeshifter.usleep_sec

Type: int (int<1, max>) Default: 1 Run-time switchable: Yes (PHP_INI_ALL)

For a string representing time, set the number of wait microseconds used to check whether it is absolute or relative time.

colopl_timeshifter.is_restore_per_request

Type: bool Default: false Run-time switchable: Yes (PHP_INI_ALL)

Sets whether or not to unhook at the end of the request.

Functions

Tip

Install colopl/colopl_timeshifter via Composer and use Colopl\ColoplTimeShifter\Manager instead when possible.

\Colopl\ColoplTimeShifter\register_hook(\DateInterval $interval): bool

Sets the time difference to be subtracted from the current time.

If the hook succeeds, it returns true; otherwise, it returns false.

\Colopl\ColoplTimeShifter\unregister_hook(): void

Breaks the hook.

\Colopl\ColoplTimeShifter\is_hooked(): bool

Checks whether the hook is active. Returns true if the hook is active, false otherwise.

License

BSD-3-Clause

This repository also vendors timelib under ext/third_party/timelib. timelib remains available under the MIT License, and ext/third_party/timelib/parse_posix.c includes an additional note for code adapted from IANA tzcode that is marked as public domain. See THIRD_PARTY_NOTICES.md for the bundled third-party notice summary.