Merge branch 'PHP-7.4'

* PHP-7.4:
  Reduce test parallelism on ARM64 CI

diff --cc .travis.yml
index 7318269344bbf776dafa3d8bcabf312a385e1133,1b3ce4119acace9768a5513bc6d027977669ee87..70e19ec7a7cd770c3ec2f7ccd2f29817259e007e
--- 1/.travis.yml
--- 2/.travis.yml
+++ b/.travis.yml
@@@ -91,7 -89,9 +91,9 @@@ before_script
  
  # Run PHPs run-tests.php
  script:
-     - ./sapi/cli/php run-tests.php -P -d extension=`pwd`/modules/zend_test.so $(if [ $ENABLE_DEBUG == 0 ]; then echo "-d opcache.enable_cli=1 -d opcache.protect_memory=1 -d opcache.jit_buffer_size=16M -d zend_extension=`pwd`/modules/opcache.so"; fi) -g "FAIL,XFAIL,BORK,WARN,LEAK,SKIP" --offline --show-diff --show-slow 1000 --set-timeout 120 -j$(nproc)
+     # ARM64 CI reports nproc=32, which is excessive.
+     - if [ -z "$ARM64" ]; then export JOBS=$(nproc); else export JOBS=16; fi
 -    - ./sapi/cli/php run-tests.php -P -d extension=`pwd`/modules/zend_test.so $(if [ $ENABLE_DEBUG == 0 ]; then echo "-d opcache.enable_cli=1 -d opcache.protect_memory=1 -d zend_extension=`pwd`/modules/opcache.so"; fi) -g "FAIL,XFAIL,BORK,WARN,LEAK,SKIP" --offline --show-diff --show-slow 1000 --set-timeout 120 -j$JOBS
++    - ./sapi/cli/php run-tests.php -P -d extension=`pwd`/modules/zend_test.so $(if [ $ENABLE_DEBUG == 0 ]; then echo "-d opcache.enable_cli=1 -d opcache.protect_memory=1 -d opcache.jit_buffer_size=16M -d zend_extension=`pwd`/modules/opcache.so"; fi) -g "FAIL,XFAIL,BORK,WARN,LEAK,SKIP" --offline --show-diff --show-slow 1000 --set-timeout 120 -j$JOBS
      - sapi/cli/php -d extension_dir=`pwd`/modules -r 'dl("zend_test");'
  
  after_success: