Deprecated Features

PHP Core

  • If a parameter with a default value is followed by a required parameter, the default value has no effect. This is deprecated as of PHP 8.0.0 and can generally be resolved by dropping the default value, without a change in functionality:

    <?php
    function test($a = [], $b) {} // Before
    function test($a$b) {}      // After
    ?>

    One exception to this rule are parameters of the form Type $param = null, where the null default makes the type implicitly nullable. This usage remains allowed, but it is recommended to use an explicit nullable type instead:

    <?php
    function test(A $a null$b) {} // Still allowed
    function test(?A $a$b) {}       // Recommended
    ?>

  • Calling get_defined_functions() with exclude_disabled explicitly set to false is deprecated and no longer has an effect. get_defined_functions() will never include disabled functions.

Enchant

LibXML

libxml_disable_entity_loader() has been deprecated. As libxml 2.9.0 is now required, external entity loading is guaranteed to be disabled by default, and this function is no longer needed to protect against XXE attacks, unless the (still vulnerable) LIBXML_NOENT is used. In that case, it is recommended to refactor the code using libxml_set_external_entity_loader() to suppress loading of external entities.

PGSQL / PDO PGSQL

Standard Library

  • Sort comparison functions that return true or false will now throw a deprecation warning, and should be replaced with an implementation that returns an integer less than, equal to, or greater than zero.

    <?php
    // Replace
    usort($arrayfn($a$b) => $a $b);
    // With
    usort($arrayfn($a$b) => $a <=> $b);
    ?>

Zip

  • Using an empty file as ZipArchive is deprecated. Libzip 1.6.0 does not accept empty files as valid zip archives any longer. The existing workaround will be removed in the next version.

  • The procedural API of Zip is deprecated. Use ZipArchive instead. Iteration over all entries can be accomplished using ZipArchive::statIndex() and a for loop:

    <?php
    // iterate using the procedural API
    assert(is_resource($zip));
    while (
    $entry zip_read($zip)) {
        echo 
    zip_entry_name($entry);
    }

    // iterate using the object-oriented API
    assert($zip instanceof ZipArchive);
    for (
    $i 0$entry $zip->statIndex($i); $i++) {
        echo 
    $entry['name'];
    }
    ?>

Reflection

Here you can write a comment


Please enter at least 10 characters.
Loading... Please wait.
* Pflichtangabe
There are no comments available yet.

PHP cURL Tutorial: Using cURL to Make HTTP Requests

cURL is a powerful PHP extension that allows you to communicate with different servers using various protocols, including HTTP, HTTPS, FTP, and more. ...

TheMax

Autor : TheMax
Category: PHP-Tutorials

Midjourney Tutorial - Instructions for beginners

There is an informative video about Midjourney, the tool for creating digital images using artificial intelligence, entitled "Midjourney tutorial in German - instructions for beginners" ...

Mike94

Autor : Mike94
Category: KI Tutorials

Basics of views in MySQL

Views in a MySQL database offer the option of creating a virtual table based on the result of an SQL query. This virtual table can be queried like a normal table without changing the underlying data. ...

admin

Autor : admin
Category: mySQL-Tutorials

Publish a tutorial

Share your knowledge with other developers worldwide

Share your knowledge with other developers worldwide

You are a professional in your field and want to share your knowledge, then sign up now and share it with our PHP community

learn more

Publish a tutorial