Home Database Mysql Tutorial Why Are My mysql_* Functions Not Working After Upgrading to PHP 5.5.0?

Why Are My mysql_* Functions Not Working After Upgrading to PHP 5.5.0?

Nov 05, 2024 pm 03:56 PM

Why Are My mysql_* Functions Not Working After Upgrading to PHP 5.5.0?

Difficulty Using mysql_* Functions after PHP Upgrade

Users upgrading to PHP 5.5.0 may encounter issues when attempting to utilize mysql_* functions, as these functions have been deprecated in this version.

Understanding the Issue

One of the common errors encountered is "Deprecated: mysql_real_escape_string()". This indicates that the mysql_real_escape_string() function is no longer supported. Attempting to replace it with mysqli_real_escape_string() results in another error, "Warning: mysqli_real_escape_string() expects exactly 2 parameters, 1 given".

Resolving the Problem

To resolve this issue, it is recommended to transition to using the mysqli extension instead of the mysql extension. This requires updates to your PHP code to utilize mysqli functions.

Revised PHP Code

Here is a revised version of the code provided as an example:

<code class="php">&lt;?php

require_once(&quot;includes/session.php&quot;);
require_once(&quot;connections/connection.php&quot;);
require_once(&quot;includes/functions.php&quot;);

// ... (remainder of the PHP code)

$connection = mysqli_connect(&quot;host&quot;, &quot;my_user&quot;, &quot;my_password&quot;, &quot;my_db&quot;);

// ... (remainder of the PHP code)

$username = mysqli_real_escape_string($connection, $username);
$password = mysqli_real_escape_string($connection, $password);

// ... (remainder of the PHP code)

// ... (mysqli alternative not shown in detail)

if (isset($connection)) {
    mysqli_close($connection);
}

?&gt;</code>
Copy after login

Conclusion

Upgrading to PHP 5.5.0 requires compatibility adjustments in existing PHP code. Transitioning to the mysqli extension and utilizing its functions is an effective solution for resolving issues related to deprecated mysql_* functions.

The above is the detailed content of Why Are My mysql_* Functions Not Working After Upgrading to PHP 5.5.0?. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot Article Tags

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Reduce the use of MySQL memory in Docker Reduce the use of MySQL memory in Docker Mar 04, 2025 pm 03:52 PM

Reduce the use of MySQL memory in Docker

How do you alter a table in MySQL using the ALTER TABLE statement? How do you alter a table in MySQL using the ALTER TABLE statement? Mar 19, 2025 pm 03:51 PM

How do you alter a table in MySQL using the ALTER TABLE statement?

How to solve the problem of mysql cannot open shared library How to solve the problem of mysql cannot open shared library Mar 04, 2025 pm 04:01 PM

How to solve the problem of mysql cannot open shared library

What is SQLite? Comprehensive overview What is SQLite? Comprehensive overview Mar 04, 2025 pm 03:55 PM

What is SQLite? Comprehensive overview

Run MySQl in Linux (with/without podman container with phpmyadmin) Run MySQl in Linux (with/without podman container with phpmyadmin) Mar 04, 2025 pm 03:54 PM

Run MySQl in Linux (with/without podman container with phpmyadmin)

Running multiple MySQL versions on MacOS: A step-by-step guide Running multiple MySQL versions on MacOS: A step-by-step guide Mar 04, 2025 pm 03:49 PM

Running multiple MySQL versions on MacOS: A step-by-step guide

What are some popular MySQL GUI tools (e.g., MySQL Workbench, phpMyAdmin)? What are some popular MySQL GUI tools (e.g., MySQL Workbench, phpMyAdmin)? Mar 21, 2025 pm 06:28 PM

What are some popular MySQL GUI tools (e.g., MySQL Workbench, phpMyAdmin)?

How do I configure SSL/TLS encryption for MySQL connections? How do I configure SSL/TLS encryption for MySQL connections? Mar 18, 2025 pm 12:01 PM

How do I configure SSL/TLS encryption for MySQL connections?

See all articles