diff --git a/azure/apt.yml b/azure/apt.yml
index e8da9b001d3ee..703e5753d3c40 100644
--- a/azure/apt.yml
+++ b/azure/apt.yml
@@ -35,8 +35,11 @@ steps:
                        libsodium-dev \
                        libargon2-0-dev \
                        libmm-dev \
+                       libsnmp-dev \
                        postgresql \
                        postgresql-contrib \
+                       snmpd \
+                       snmp-mibs-downloader \
                        llvm \
                        ${{ parameters.packages }}
     displayName: 'APT'
diff --git a/azure/configure.yml b/azure/configure.yml
index e9e49bf98acb6..fd0191528bef6 100644
--- a/azure/configure.yml
+++ b/azure/configure.yml
@@ -56,6 +56,7 @@ steps:
         --with-mhash \
         --with-sodium \
         --enable-dba \
+        --with-snmp \
         --enable-werror \
         --with-config-file-path=/etc \
         --with-config-file-scan-dir=/etc/php.d
diff --git a/azure/setup.yml b/azure/setup.yml
index 523bb3b401436..825ca4d5f6c01 100644
--- a/azure/setup.yml
+++ b/azure/setup.yml
@@ -10,4 +10,10 @@ steps:
     displayName: 'Setup'
   - script: ./azure/setup-slapd.sh
     displayName: 'Configure slapd'
+  - script: |
+      set -e
+      sudo cp ext/snmp/tests/snmpd.conf /etc/snmp
+      sudo cp ext/snmp/tests/bigtest /etc/snmp
+      sudo service snmpd restart
+    displayName: 'Configure snmpd'
 
diff --git a/ext/snmp/snmp.c b/ext/snmp/snmp.c
index 44c9c98e71a3c..3305565f79ea8 100644
--- a/ext/snmp/snmp.c
+++ b/ext/snmp/snmp.c
@@ -1082,7 +1082,7 @@ static void php_snmp(INTERNAL_FUNCTION_PARAMETERS, int st, int version)
 {
 	zend_string *oid_str, *type_str = NULL, *value_str = NULL;
 	HashTable *oid_ht, *type_ht = NULL, *value_ht = NULL;
-	char *a1, *a2, *a3, *a4, *a5, *a6, *a7;
+	char *a1 = NULL, *a2 = NULL, *a3 = NULL, *a4 = NULL, *a5 = NULL, *a6 = NULL, *a7 = NULL;
 	size_t a1_len, a2_len, a3_len, a4_len, a5_len, a6_len, a7_len;
 	zend_bool use_orignames = 0, suffix_keys = 0;
 	zend_long timeout = SNMP_DEFAULT_TIMEOUT;