Ref

php/Makefile

@@ -1,4 +1,4 @@
-DOCKER_RUN=docker run -it --rm -v "$PWD:/usr/src/myapp" -w /usr/src/myapp php/ffi
+DOCKER_RUN=docker run -it --rm -v "$${PWD}:/usr/src/myapp" -w /usr/src/myapp php/ffi
 CC=gcc
 
 .PHONY: all
@@ -17,12 +17,12 @@ docker-image:
 
 .PHONY: run-heavy-php
 run-heavy-php:
-	${DOCKER_RUN} php heavy_stuff.php
+	time ${DOCKER_RUN} php heavy_stuff.php
 
 .PHONY: run-heavy-php-c
 run-heavy-php-c:
-	${DOCKER_RUN} php heavy_stuff.
+	time ${DOCKER_RUN} php heavy_stuff_c.php
 
 .PHONY: clean
 clean:
-	rm main heavy_stuff.so
+	rm main *.so

php/heavy_stuff.php

@@ -10,15 +10,11 @@ function someReallyHeavyStuff($lima, $limb){
     }
     $result+=$sum;
   }
-  $result = 0;
-  for($i=0;$i<$lima;$i++){
-    $result+=$sum;
-  }
   return $result;
 }
 
-$result = someReallyHeavyStuff(1000,1000);
+$r = someReallyHeavyStuff(1000,100000);
 
-echo "The heavy result: $result\n"
+echo "The heavy result: $r\n"
 
 ?>

php/heavy_stuff_c.php

@@ -6,7 +6,7 @@ $ffi = FFI::cdef("
 
 echo "Hello, also heavy stuff here:\n";
 
-$result = $ffi->some_heavy_stuff(1000,1000);
+$result = $ffi->some_heavy_stuff(1000,100000);
 
 echo "The heavy result: $result\n";
 

php/heavy_stuff_opt_c.php

@@ -6,7 +6,7 @@ $ffi = FFI::cdef("
 
 echo "Hello, less heavy stuff here:\n";
 
-$result = $ffi->lesser_heavy_stuff(1000,1000);
+$result = $ffi->lesser_heavy_stuff(10000,100000);
 
 echo "The heavy result: $result\n";
 

php/main.c

@@ -3,8 +3,8 @@
 extern unsigned long some_heavy_stuff(int lima, int limb);
 
 int main(void) {
-  int lima = 1000;
+  int lima = 10000;
-  int limb = 1000;
+  int limb = 100000;
   printf("Hello from blistering C: \n");
   printf("Doing stuff: \n");
   unsigned long result = some_heavy_stuff(lima, limb);