diff --git a/R3.01/README.md b/R3.01/README.md
index dc0a2a4..45ec43f 100644
--- a/R3.01/README.md
+++ b/R3.01/README.md
@@ -33,6 +33,8 @@ Les notions suivantes seront abordées :
 | 1 : 16/03 - 20/03| [Bases du langages](./cours/cm_bases_php.pdf)             |      |
 | 2 : 23/03 - 27/03  |      | [tp1](./tp/tp1)       |
 | 3 : 30/03 - 03/04  | [Intéractions avec le client](./cours/cm_interaction_client_serveur.pdf)     | [tp2](./tp/tp2)       |
+| 4 : 07/04 - 10/04  | [PHP/MySQL](./cours/cm_extension_mysqli.pdf)            | [tp3](./tp/tp3)       |
+
 
 
 ## Les TPS
diff --git a/R3.01/cours/cm_extension_mysqli.pdf b/R3.01/cours/cm_extension_mysqli.pdf
new file mode 100644
index 0000000..cc48426
Binary files /dev/null and b/R3.01/cours/cm_extension_mysqli.pdf differ