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PHP 7.0 is a thing.

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Phil Sturgeon
2015-12-02 10:07:13 -05:00
parent a29c98dba1
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_posts/07-02-01-Databases_MySQL.md
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@@ -6,20 +6,27 @@ anchor: mysql_extension
## MySQL Extension {#mysql_extension_title}
The [mysql] extension for PHP is no longer in active development, was [deprecated as of PHP 5.5.0]
[mysql_deprecated], and has been [officially removed as of PHP 7.0.0][mysql_removed]. If you are using any functions that
start with `mysql_*` such as `mysql_connect()` and `mysql_query()` in your applications then these will simply not be
available in PHP 7.0.0. This means you will be faced with a rewrite at some point down the line, so the
best option is to replace mysql usage with [mysqli] or [PDO] in your applications within your own development schedules
so you won't be rushed later on.
The [mysql] extension for PHP is incredibly old and has superseded by two other extensions:
**If you are starting from scratch then absolutely do not use the [mysql] extension: use the [MySQLi extension][mysqli],
or use [PDO].**
- [mysqli]
- [pdo]
Not only did development stop long ago on [mysql], but it was [deprecated as of PHP 5.5.0]
[mysql_deprecated], and **has been [officially removed in PHP 7.0][mysql_removed]**.
To save digging into your `php.ini` settings to see which module you are using, one option is to search for `mysql_*`
in your editor of choice. If any functions such as `mysql_connect()` and `mysql_query()` show up, then `mysql` is
in use.
Even if you are not using PHP 7.0 yet, failing to consider this upgrade as soon as possible will lead to greater
hardship when the PHP 7.0 upgrade does come about. The best option is to replace mysql usage with [mysqli] or [PDO] in
your applications within your own development schedules so you won't be rushed later on.
**If you are upgrading from [mysql] to [mysqli], beware lazy upgrade guides that suggest you can simply find and replace `mysql_*` with `mysqli_*`. Not only is that a gross oversimplification, it misses out on the advantages that mysqli provides, such as parameter binding, which is also offered in [PDO][pdo].**
* [PHP: Choosing an API for MySQL][mysql_api]
* [PDO Tutorial for MySQL Developers][pdo4mysql_devs]
[mysql]: http://php.net/mysql
[mysql_deprecated]: http://php.net/migration55.deprecated
[mysql_removed]: http://php.net/manual/en/migration70.removed-exts-sapis.php