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Example code of yogarine/wait-for-it.php

Informations about the package wait-for-it.php

wait-for-it.php

wait-for-it.php is a PHP implementation of the wait-for-it.sh script by Gilles Hall.

It can be both run as a standalone executable or included in PHP and used by calling the wait_for_it() function. As standalone script it can be used as a drop-in replacement for wait-for-it.sh.

Usage

From the command line

From PHP:

Installation

As Composer package

You can install it globally to use it as a stand-alone command:

You can also install wait-for-it.php as a dependency of your project:

This will allow you to use the wait_for_it() function.

Docker

wait-for-it.php is also available as a Docker image:

You can also easily copy the script in your own Dockerfiles:

Just keep in mind you'll need to have the pcntl extension installed.

Usage in PHP code

When installed as composer package wait-for-it.php is automatically included as helper file, and declares the wait_for_it() function.

It will wait and return true if the host came up, and false otherwise.

Examples

For example, let's test to see if we can access port 80 on www.google.com, and if it is available, echo the message google is up.

You can set your own timeout with the -t or --timeout= option. Setting the timeout value to 0 will disable the timeout:

The subcommand will be executed regardless if the service is up or not. If you wish to execute the subcommand only if the service is up, add the --strict argument. In this example, we will test port 81 on www.google.com which will fail:

If you don't want to execute a subcommand, leave off the -- argument. This way, you can test the exit condition of wait-for-it.php in your own scripts, and determine how to proceed:

All versions of wait-for-it.php with dependencies

PHP Build Version
Package Version
Requires php Version >=7.0
ext-pcntl Version *
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