Fix php 8 major version

Author: joanhey

config

@@ -65,8 +65,8 @@ if [ -z "$NGX_PHP_INCS" ]; then
 fi
 
 if [ -z "$NGX_PHP_LIBS" ]; then
-  PHP_VERSION="`$PHP_CONFIG --version`"
-  PHP_MAJOR_VERSION=`echo $PHP_VERSION | sed -e "s#\.[0-9]*##g"`
+  PHP_VERSION="`$PHP_CONFIG --vernum`"
+  PHP_MAJOR_VERSION=`echo $PHP_VERSION | cut -b 1`
   if [ $PHP_MAJOR_VERSION -ge "8" ]; then
     PHP_MAJOR_VERSION=""
   fi