PHP and DBMS compatibility of major Moodle releases
We get a non-ending stream of requests in the moodle.org forums from people having trouble in marching old Moodle installations to newer and supported versions. Things break easily since along the path the system requirements have been evolving too. The following table summarizes their dependencies. (Last edited 2025-04-22 08:49 UTC)
| Target | Earliest from |
PHP | MySQL | PgSQL | MariaDB | ||||
|---|---|---|---|---|---|---|---|---|---|
| min. | max. | min. | max. | min. | max. | min. | max. | ||
| 1.6[1] | 1.0 | 4.3.0 | 5.6 | 4.1.16 | ? | 8.0 | ? | - | - |
| 1.9[2] | 1.6 | 4.3.0 | 5.6 | 4.1.16 | 5.7? | 8.0 | ? | - | - |
| 2.2[3] | 1.9 | 5.3.2 | 5.6 | 5.0.25 | 5.7? | 8.3 | ? | - | - |
| 2.4 | 2.2 | 5.3.2 | 5.6 | 5.1.33 | 5.7? | 8.3 | ? | - | - |
| 2.7 (LTS) | 2.2 | 5.4.4 | 5.6 | 5.5.31 | 5.7? | 9.1 | ? | 5.5.31 | 10.2 |
| 3.0 | 2.2 | 5.4.4 | 7.0 | 5.5.31 | 5.7? | 9.1 | ? | 5.5.31 | 10.2 |
| 3.1 (LTS) | 2.7 | 5.4.4 | 7.0 | 5.5.31 | 5.7 | 9.1 | ? | 5.5.31 | 10.2 |
| 3.2 | 2.7 | 5.6.5 | 7.1 | 5.5.31 | 5.7 | 9.1 | ? | 5.5.31 | 10.2 |
| 3.3 | 2.7 | 5.6.5 | 7.1 | 5.5.31 | 5.7 | 9.3 | ? | 5.5.31 | 10.2 |
| 3.4 | 3.0 | 7.0 | 7.1 | 5.5.31 | 5.7 | 9.3 | ? | 5.5.31 | 10.2 |
| 3.5 (LTS) | 3.1 | 7.0 | 7.2 | 5.5.31 | 8.0 | 9.3 | ? | 5.5.31 | 10.5 |
| 3.6 | 3.1 | 7.0 | 7.3 | 5.6 | 8.0 | 9.4 | ? | 10.0? | 10.5 |
| 3.7 | 3.2 | 7.1 | 7.3 | 5.6 | 8.0 | 9.4 | ? | 10.0? | 10.5 |
| 3.8 | 3.2 | 7.1 | 7.4[4] | 5.6 | 8.0 | 9.4 | ? | 10.0? | 10.5 |
| 3.9 (LTS) | 3.5 | 7.2 | 7.4 | 5.6 | 8.0 | 9.5 | ? | 10.2.29 | 10.6 (not 10.6.0-10.6.6) |
| 3.10 | 3.5 | 7.2 | 7.4 | 5.7 | 8.0 | 9.6 | ? | 10.2.29 | 10.6 (not 10.6.0-10.6.6) |
| 3.11 | 3.6 | 7.3 | 8.0[5] | 5.7 | 8.0 | 9.6 | ? | 10.2.29 | 10.6 (not 10.6.0-10.6.6) |
| 4.0 | 3.6 | 7.3 | 8.0[5] | 5.7 | 8.0 | 10 | ? | 10.2.29 | 10.6 (not 10.6.0-10.6.6) |
| 4.1 (LTS) | 3.9 | 7.4 | 8.1[6] | 5.7 | latest | 12 | ? | 10.4 | 10.11 |
| 4.2 | 3.11 | 8.0[8] | 8.2[7] | 8.0 | latest | 13 | ? | 10.6.7 | latest |
| 4.3 | 3.11.8 | 8.0[8] | 8.2 | 8.0 | latest | 13 | ? | 10.6.7 | latest |
| 4.4 | 4.1.2 | 8.1[8] | 8.3 | 8.0 | latest | 13 | ? | 10.6.7 | latest |
| 4.5 (LTS) | 4.1.2 | 8.1[8] | 8.3 | 8.0 | latest | 13 | ? | 10.6.7 | latest |
| 4.6 (experimental)[9] | 4.1.2 | 8.1[8] | 8.3 | 8.0 | latest | 13 | ? | 10.6.7 | latest |
| 5.0 | 4.2.3 | 8.2 | 8.3[10] | 8.4 | latest | 14 | ? | 10.11.0 | latest |
Footnotes:
- Release 1.6 was a de-facto LTS, supported for 3 years
- Release 1.9 was a de-facto LTS, supported for 6 years
- Upgrade from 1.9 to 2.x broke so many things, it is advisable to rebuild the site - either through course backups and restore or create courses from scratch making use of the numerous new features added since then
- PHP 7.4 since release 3.8.3. See MDL-66260.
- PHP 8.0 since Moodle 3.11.8 and 4.0.2. See MDL-70745.
- PHP 8.1 since Moodle 4.1.2. See MDL-73016.
- PHP 8.2 since Moodle 4.2.3. See MDL-76405
- 64 bit PHP only. See MDL-76405
- Released December 2024 Announcement and discussion
- MDL-80117
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