Deprecated 'implode/join' usage
Reports deprecated usage of the implode and join functions.
Locating this inspection
- By ID
Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.
PhpDeprecatedImplodeUsageInspection- Via Settings dialog
Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.
Starting from PHP 7.4, using implode and join with an array as the first argument and a string as the second argument is deprecated.
See Deprecations for PHP 7.4 (php.net) for details.
Inspection options
Here you can find the description of settings available for the Deprecated 'implode/join' usage inspection, and the reference of their default values.
- PHP 8.0 Severity
Default value:
ErrorOther available settings:
Warning
Weak Warning
Server Problem
Grammar Error
Typo
Consideration
Information
Suppressing Inspection
You can suppress this inspection by placing the following comment marker before the code fragment where you no longer want messages from this inspection to appear:
More detailed instructions as well as other ways and options that you have can be found in the product documentation:
Inspection Details | |
|---|---|
By default bundled with: | IntelliJ IDEA 2025.2, PhpStorm 2025.2, Qodana for JVM 2025.2, Qodana for PHP 2025.2, |