Another try at making concat_003 more reliable

Use array_fill() for the array population loop -- this isn't the
part that is being tested and on PHP 7.0 w/o opcache this duplicates
the inner array a lot.

Author: nikic

Zend/tests/concat_003.phpt

@@ -2,37 +2,24 @@
 Concatenating many small strings should not slowdown allocations
 --SKIPIF--
 <?php if (PHP_DEBUG) { die ("skip debug version is slow"); } ?>
---INI--
-memory_limit=256m
 --FILE--
 <?php
 
-/* To note is that memory usage can vary depending on whether opcache is on. The actual
-  measuring that matters is timing here. */
-
 $time = microtime(TRUE);
 
 /* This might vary on Linux/Windows, so the worst case and also count in slow machines. */
-$t0_max = 0.3;
-$t1_max = 1.0;
-
-$datas = [];
-for ($i = 0; $i < 220000; $i++)
-{
-    $datas[] = [
-        '000.000.000.000',
-        '000.255.255.255',
-        '保留地址',
-        '保留地址',
-        '保留地址',
-        '保留地址',
-        '保留地址',
-        '保留地址',
-    ];
-}
-
-$t0 = microtime(TRUE) - $time;
-var_dump($t0 < $t0_max);
+$t_max = 1.0;
+
+$datas = array_fill(0, 220000, [
+    '000.000.000.000',
+    '000.255.255.255',
+    '保留地址',
+    '保留地址',
+    '保留地址',
+    '保留地址',
+    '保留地址',
+    '保留地址',
+]);
 
 $time = microtime(TRUE);
 $texts = '';
@@ -41,12 +28,11 @@ foreach ($datas AS $data)
     $texts .= implode("\t", $data) . "\r\n";
 }
 
-$t1 = microtime(TRUE) - $time;
-var_dump($t1 < $t1_max);
+$t = microtime(TRUE) - $time;
+var_dump($t < $t_max);
 
 ?>
 +++DONE+++
 --EXPECT--
 bool(true)
-bool(true)
 +++DONE+++