Added mysqlnd.collect_memory_statistics to ini quick reference (php#16819)

Fixes php#16818
Closes php#16819

Author: hauk92

NEWS

@@ -21,6 +21,10 @@ PHP                                                                        NEWS
 - Intl:
   . Bumped ICU requirement to ICU >= 57.1. (cmb)
 
+- MySQLnd:
+  . Added mysqlnd.collect_memory_statistics to ini quick reference.
+    (hauk92)
+
 - OPcache:
   . Fixed ZTS OPcache build on Cygwin. (cmb)
   . Added opcache.file_cache_read_only. (Samuel Melrose)

php.ini-development

@@ -119,6 +119,11 @@
 ;   Development Value: 60 (60 seconds)
 ;   Production Value: 60 (60 seconds)
 
+; mysqlnd.collect_memory_statistics
+;   Default Value: Off
+;   Development Value: On
+;   Production Value: Off
+
 ; output_buffering
 ;   Default Value: Off
 ;   Development Value: 4096
@@ -1193,6 +1198,9 @@ mysqlnd.collect_statistics = On
 
 ; Enable / Disable collection of memory usage statistics by mysqlnd which can be
 ; used to tune and monitor MySQL operations.
+; Default Value: Off
+; Development Value: On
+; Production Value: Off
 mysqlnd.collect_memory_statistics = On
 
 ; Records communication from all extensions using mysqlnd to the specified log

php.ini-production

@@ -119,6 +119,11 @@
 ;   Development Value: 60 (60 seconds)
 ;   Production Value: 60 (60 seconds)
 
+; mysqlnd.collect_memory_statistics
+;   Default Value: Off
+;   Development Value: On
+;   Production Value: Off
+
 ; output_buffering
 ;   Default Value: Off
 ;   Development Value: 4096
@@ -1195,6 +1200,9 @@ mysqlnd.collect_statistics = On
 
 ; Enable / Disable collection of memory usage statistics by mysqlnd which can be
 ; used to tune and monitor MySQL operations.
+; Default Value: Off
+; Development Value: On
+; Production Value: Off
 mysqlnd.collect_memory_statistics = Off
 
 ; Records communication from all extensions using mysqlnd to the specified log