Add array_micro_bench.php

Author: ndossche

Zend/array_micro_bench.php

@@ -0,0 +1,66 @@
+<?php
+
+function array_merge_loop($n) {
+    $a = range(1, 3);
+    for ($i = 0; $i < $n; ++$i) {
+        $a = array_merge($a, [1, 2, 3]);
+    }
+}
+
+function array_merge_loop_with_temporary($n) {
+    $a = [];
+    for ($i = 0; $i < $n; ++$i) {
+        $a = array_merge($a, [1, 2]) + [100];
+    }
+}
+
+function array_merge_loop_nested($n) {
+    $a = [];
+    for ($i = 0; $i < $n; ++$i) {
+        $a = array_merge($a, [1, 2]) + [$a];
+    }
+}
+
+function array_unique_loop($n) {
+    $a = range(1, 500);
+    $a += $a;
+    for ($i = 0; $i < $n; ++$i) {
+        $a = array_unique($a);
+    }
+}
+
+function user_func_helper($array) {
+    for ($i = 0; $i < 100; $i++) {
+        $array[$i] = $i;
+    }
+    return $array;
+}
+
+function user_func($n) {
+    $a = [];
+    for ($i = 0; $i < $n; ++$i) {
+        $a = user_func_helper($a);
+    }
+}
+
+/*****/
+
+require 'bench_common.php';
+
+const N = 20000;
+
+$t0 = $t = start_test();
+empty_loop(N);
+$t = end_test($t, 'empty_loop');
+$overhead = $last_time;
+array_merge_loop(N);
+$t = end_test($t, 'array_merge', $overhead);
+array_merge_loop_with_temporary(N);
+$t = end_test($t, 'array_merge temp', $overhead);
+array_merge_loop_nested(N);
+$t = end_test($t, 'array_merge nest', $overhead);
+array_unique_loop(N);
+$t = end_test($t, 'array_unique', $overhead);
+user_func(N);
+$t = end_test($t, 'user_func', $overhead);
+total($t0, "Total");

Zend/bench.php

@@ -345,41 +345,7 @@ function strcat($n) {
 
 /*****/
 
-function gethrtime()
-{
-  $hrtime = hrtime();
-  return (($hrtime[0]*1000000000 + $hrtime[1]) / 1000000000);
-}
-
-function start_test()
-{
-    ob_start();
-  return gethrtime();
-}
-
-function end_test($start, $name)
-{
-  global $total;
-  $end = gethrtime();
-  ob_end_clean();
-  $total += $end-$start;
-  $num = number_format($end-$start,3);
-  $pad = str_repeat(" ", 24-strlen($name)-strlen($num));
-
-  echo $name.$pad.$num."\n";
-    ob_start();
-  return gethrtime();
-}
-
-function total()
-{
-  global $total;
-  $pad = str_repeat("-", 24);
-  echo $pad."\n";
-  $num = number_format($total,3);
-  $pad = str_repeat(" ", 24-strlen("Total")-strlen($num));
-  echo "Total".$pad.$num."\n";
-}
+require 'bench_common.php';
 
 $t0 = $t = start_test();
 simple();

Zend/bench_common.php

@@ -0,0 +1,48 @@
+<?php
+
+function empty_loop($n) {
+    for ($i = 0; $i < $n; ++$i) {
+    }
+}
+
+function gethrtime()
+{
+  $hrtime = hrtime();
+  return (($hrtime[0]*1000000000 + $hrtime[1]) / 1000000000);
+}
+
+function start_test()
+{
+  ob_start();
+  return gethrtime();
+}
+
+function end_test($start, $name, $overhead = null)
+{
+  global $total;
+  global $last_time;
+  $end = gethrtime();
+  ob_end_clean();
+  $last_time = $end-$start;
+  $total += $last_time;
+  $num = number_format($last_time,3);
+  $pad = str_repeat(" ", 24-strlen($name)-strlen($num));
+  if (is_null($overhead)) {
+    echo $name.$pad.$num."\n";
+  } else {
+    $num2 = number_format($last_time - $overhead,3);
+    echo $name.$pad.$num."    ".$num2."\n";
+  }
+  ob_start();
+  return gethrtime();
+}
+
+function total()
+{
+  global $total;
+  $pad = str_repeat("-", 24);
+  echo $pad."\n";
+  $num = number_format($total,3);
+  $pad = str_repeat(" ", 24-strlen("Total")-strlen($num));
+  echo "Total".$pad.$num."\n";
+}

Zend/micro_bench.php

@@ -233,52 +233,7 @@ function ternary2($n) {
 
 /*****/
 
-function empty_loop($n) {
-    for ($i = 0; $i < $n; ++$i) {
-    }
-}
-
-function gethrtime()
-{
-  $hrtime = hrtime();
-  return (($hrtime[0]*1000000000 + $hrtime[1]) / 1000000000);
-}
-
-function start_test()
-{
-  ob_start();
-  return gethrtime();
-}
-
-function end_test($start, $name, $overhead = null)
-{
-  global $total;
-  global $last_time;
-  $end = gethrtime();
-  ob_end_clean();
-  $last_time = $end-$start;
-  $total += $last_time;
-  $num = number_format($last_time,3);
-  $pad = str_repeat(" ", 24-strlen($name)-strlen($num));
-  if (is_null($overhead)) {
-    echo $name.$pad.$num."\n";
-  } else {
-    $num2 = number_format($last_time - $overhead,3);
-    echo $name.$pad.$num."    ".$num2."\n";
-  }
-  ob_start();
-  return gethrtime();
-}
-
-function total()
-{
-  global $total;
-  $pad = str_repeat("-", 24);
-  echo $pad."\n";
-  $num = number_format($total,3);
-  $pad = str_repeat(" ", 24-strlen("Total")-strlen($num));
-  echo "Total".$pad.$num."\n";
-}
+require 'bench_common.php';
 
 const N = 5000000;