From e88df7429fc707caa9fb3e9361cb7e7526617221 Mon Sep 17 00:00:00 2001
From: Nils Adermann <naderman@naderman.de>
Date: Wed, 8 Jul 2015 13:36:19 +0200
Subject: [PATCH 1/2] Remove a few hundred/thousand array_merge calls

---
 src/Composer/Package/Version/VersionParser.php | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/Composer/Package/Version/VersionParser.php b/src/Composer/Package/Version/VersionParser.php
index 89bf4819f..f7650f367 100644
--- a/src/Composer/Package/Version/VersionParser.php
+++ b/src/Composer/Package/Version/VersionParser.php
@@ -257,10 +257,11 @@ class VersionParser
         foreach ($orConstraints as $constraints) {
             $andConstraints = preg_split('{(?<!^|as|[=>< ,]) *(?<!-)[, ](?!-) *(?!,|as|$)}', $constraints);
             if (count($andConstraints) > 1) {
-                $constraintObjects = array();
+                $constraintObjects = array(array());
                 foreach ($andConstraints as $constraint) {
-                    $constraintObjects = array_merge($constraintObjects, $this->parseConstraint($constraint));
+                    $constraintObjects[] = $this->parseConstraint($constraint);
                 }
+                $constraintObjects = call_user_func_array('array_merge', $constraintObjects);
             } else {
                 $constraintObjects = $this->parseConstraint($andConstraints[0]);
             }

From 3fd46723829c9fd9ade5db3a2f6fdb8765542738 Mon Sep 17 00:00:00 2001
From: Nils Adermann <naderman@naderman.de>
Date: Thu, 9 Jul 2015 12:57:34 +0200
Subject: [PATCH 2/2] VersionParser: Append elements directly instead of
 array_merge

---
 src/Composer/Package/Version/VersionParser.php | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/Composer/Package/Version/VersionParser.php b/src/Composer/Package/Version/VersionParser.php
index f7650f367..0f9faa8a7 100644
--- a/src/Composer/Package/Version/VersionParser.php
+++ b/src/Composer/Package/Version/VersionParser.php
@@ -257,11 +257,12 @@ class VersionParser
         foreach ($orConstraints as $constraints) {
             $andConstraints = preg_split('{(?<!^|as|[=>< ,]) *(?<!-)[, ](?!-) *(?!,|as|$)}', $constraints);
             if (count($andConstraints) > 1) {
-                $constraintObjects = array(array());
+                $constraintObjects = array();
                 foreach ($andConstraints as $constraint) {
-                    $constraintObjects[] = $this->parseConstraint($constraint);
+                    foreach ($this->parseConstraint($constraint) as $parsedConstraint) {
+                        $constraintObjects[] = $parsedConstraint;
+                    }
                 }
-                $constraintObjects = call_user_func_array('array_merge', $constraintObjects);
             } else {
                 $constraintObjects = $this->parseConstraint($andConstraints[0]);
             }