diff --git a/src/build/installer.sh b/src/build/installer.sh
index e97aee552..1a5dbc561 100644
--- a/src/build/installer.sh
+++ b/src/build/installer.sh
@@ -7,6 +7,8 @@ RPI_BUILD="PHP_5.5.9_ARM_Raspbian_hard"
 AND_BUILD="PHP_5.5.9_ARMv7_Android"
 IOS_BUILD="PHP_5.5.9_ARMv6_iOS"
 update=off
+forcecompile=off
+alldone=no
 
 #Needed to use aliases
 shopt -s expand_aliases
@@ -23,11 +25,14 @@ else
 fi
 
 
-while getopts "udv:" opt; do
+while getopts "ucdv:" opt; do
   case $opt in
     u)
 	  update=on
       ;;
+    c)
+	  forcecompile=on
+      ;;
 	d)
 	  PMMP_VERSION="master"
       ;;
@@ -60,7 +65,6 @@ rm -f LICENSE
 rm -f start.sh
 rm -f start.bat
 echo "[1/3] Downloading PocketMine-MP $PMMP_VERSION..."
-set -e
 download_file "https://github.com/PocketMine/PocketMine-MP/archive/$PMMP_VERSION.tar.gz" | tar -zx > /dev/null
 mv -f PocketMine-MP-$PMMP_VERSION/* ./
 rm -f -r PocketMine-MP-$PMMP_VERSION/
@@ -72,7 +76,7 @@ if [ $update == on ]; then
 else
 	echo -n "[3/3] Obtaining PHP:"
 	echo " detecting if build is available..."
-	if [ "$(uname -s)" == "Darwin" ]; then
+	if [ "$forcecompile" == "off" ] && [ "$(uname -s)" == "Darwin" ]; then
 		set +e
 		UNAME_M=$(uname -m)
 		IS_IOS=$(expr match $UNAME_M 'iP[a-zA-Z0-9,]*')
@@ -82,57 +86,71 @@ else
 			echo -n "[3/3] iOS PHP build available, downloading $IOS_BUILD.tar.gz..."
 			download_file "http://sourceforge.net/projects/pocketmine/files/builds/$IOS_BUILD.tar.gz" | tar -zx > /dev/null 2>&1
 			chmod +x ./bin/php5/bin/*
-			echo -n " regenerating php.ini..."
-			echo "date.timezone=$TIMEZONE" >> "./bin/php5/lib/php.ini"
-			echo "short_open_tag=0" >> "./bin/php5/lib/php.ini"
-			echo "asp_tags=0" >> "./bin/php5/lib/php.ini"
-			echo " done"
+			echo -n " checking..."
+			if [ $(./bin/php5/bin/php -r 'echo "yes";') == "yes" ]; then
+				echo -n " regenerating php.ini..."
+				echo "date.timezone=$TIMEZONE" >> "./bin/php5/lib/php.ini"
+				echo "short_open_tag=0" >> "./bin/php5/lib/php.ini"
+				echo "asp_tags=0" >> "./bin/php5/lib/php.ini"
+				echo " done"
+				alldone=yes
+			else
+				echo " invalid build detected"
+			fi
 		else
 			rm -r -f bin/ >> /dev/null 2>&1
 			echo -n "[3/3] Mac OSX PHP build available, downloading $MAC_BUILD.tar.gz..."
 			download_file "http://sourceforge.net/projects/pocketmine/files/builds/$MAC_BUILD.tar.gz" | tar -zx > /dev/null 2>&1
 			chmod +x ./bin/php5/bin/*
-			echo -n " regenerating php.ini..."
-			OPCACHE_PATH=$(find "./bin/php5" -name opcache.so)
-			echo "zend_extension=\"$OPCACHE_PATH\"" > "./bin/php5/lib/php.ini"
-			echo "opcache.enable=1" >> "./bin/php5/lib/php.ini"
-			echo "opcache.enable_cli=1" >> "./bin/php5/lib/php.ini"
-			echo "opcache.save_comments=0" >> "./bin/php5/lib/php.ini"
-			echo "opcache.fast_shutdown=1" >> "./bin/php5/lib/php.ini"
-			echo "opcache.max_accelerated_files=4096" >> "./bin/php5/lib/php.ini"
-			echo "opcache.interned_strings_buffer=8" >> "./bin/php5/lib/php.ini"
-			echo "opcache.memory_consumption=128" >> "./bin/php5/lib/php.ini"
-			echo "opcache.optimization_level=0xffffffff" >> "./bin/php5/lib/php.ini"
-			echo "date.timezone=$TIMEZONE" >> "./bin/php5/lib/php.ini"
-			echo "short_open_tag=0" >> "./bin/php5/lib/php.ini"
-			echo "asp_tags=0" >> "./bin/php5/lib/php.ini"
-			echo " done"
+			echo -n " checking..."
+			if [ $(./bin/php5/bin/php -r 'echo "yes";') == "yes" ]; then
+				echo -n " regenerating php.ini..."
+				echo "zend_extension=opcache.so" > "./bin/php5/lib/php.ini"
+				echo "opcache.enable=1" >> "./bin/php5/lib/php.ini"
+				echo "opcache.enable_cli=1" >> "./bin/php5/lib/php.ini"
+				echo "opcache.save_comments=0" >> "./bin/php5/lib/php.ini"
+				echo "opcache.fast_shutdown=1" >> "./bin/php5/lib/php.ini"
+				echo "opcache.max_accelerated_files=4096" >> "./bin/php5/lib/php.ini"
+				echo "opcache.interned_strings_buffer=8" >> "./bin/php5/lib/php.ini"
+				echo "opcache.memory_consumption=128" >> "./bin/php5/lib/php.ini"
+				echo "opcache.optimization_level=0xffffffff" >> "./bin/php5/lib/php.ini"
+				echo "date.timezone=$TIMEZONE" >> "./bin/php5/lib/php.ini"
+				echo "short_open_tag=0" >> "./bin/php5/lib/php.ini"
+				echo "asp_tags=0" >> "./bin/php5/lib/php.ini"
+				echo " done"
+				alldone=yes
+			else
+				echo " invalid build detected"
+			fi
 		fi
 	else
-		set +e
 		grep -q BCM2708 /proc/cpuinfo > /dev/null 2>&1
-		if [ $? -eq 0 ]; then
-			set -e
+		if  [ $? -eq 0 ] && [ "$forcecompile" == "off" ]; then
 			rm -r -f bin/ >> /dev/null 2>&1
 			echo -n "[3/3] Raspberry Pi PHP build available, downloading $RPI_BUILD.tar.gz..."
 			download_file "http://sourceforge.net/projects/pocketmine/files/builds/$RPI_BUILD.tar.gz" | tar -zx > /dev/null 2>&1
 			chmod +x ./bin/php5/bin/*
-			echo -n " regenerating php.ini..."
-			OPCACHE_PATH=$(find "./bin/php5" -name opcache.so)
-			echo "zend_extension=\"$OPCACHE_PATH\"" > "./bin/php5/lib/php.ini"
-			echo "opcache.enable=1" >> "./bin/php5/lib/php.ini"
-			echo "opcache.enable_cli=1" >> "./bin/php5/lib/php.ini"
-			echo "opcache.save_comments=0" >> "./bin/php5/lib/php.ini"
-			echo "opcache.fast_shutdown=1" >> "./bin/php5/lib/php.ini"
-			echo "opcache.max_accelerated_files=4096" >> "./bin/php5/lib/php.ini"
-			echo "opcache.interned_strings_buffer=8" >> "./bin/php5/lib/php.ini"
-			echo "opcache.memory_consumption=128" >> "./bin/php5/lib/php.ini"
-			echo "opcache.optimization_level=0xffffffff" >> "./bin/php5/lib/php.ini"
-			echo "date.timezone=$TIMEZONE" >> "./bin/php5/lib/php.ini"
-			echo "short_open_tag=0" >> "./bin/php5/lib/php.ini"
-			echo "asp_tags=0" >> "./bin/php5/lib/php.ini"
-			echo " done"
-		elif [ "$(uname -s)" == "Linux" ]; then
+			echo -n " checking..."
+			if [ $(./bin/php5/bin/php -r 'echo "yes";') == "yes" ]; then
+				echo -n " regenerating php.ini..."
+				echo "zend_extension=opcache.so" > "./bin/php5/lib/php.ini"
+				echo "opcache.enable=1" >> "./bin/php5/lib/php.ini"
+				echo "opcache.enable_cli=1" >> "./bin/php5/lib/php.ini"
+				echo "opcache.save_comments=0" >> "./bin/php5/lib/php.ini"
+				echo "opcache.fast_shutdown=1" >> "./bin/php5/lib/php.ini"
+				echo "opcache.max_accelerated_files=4096" >> "./bin/php5/lib/php.ini"
+				echo "opcache.interned_strings_buffer=8" >> "./bin/php5/lib/php.ini"
+				echo "opcache.memory_consumption=128" >> "./bin/php5/lib/php.ini"
+				echo "opcache.optimization_level=0xffffffff" >> "./bin/php5/lib/php.ini"
+				echo "date.timezone=$TIMEZONE" >> "./bin/php5/lib/php.ini"
+				echo "short_open_tag=0" >> "./bin/php5/lib/php.ini"
+				echo "asp_tags=0" >> "./bin/php5/lib/php.ini"
+				echo " done"
+				alldone=yes
+			else
+				echo " invalid build detected"
+			fi
+		elif [ "$forcecompile" == "off" ] && [ "$(uname -s)" == "Linux" ]; then
 			rm -r -f bin/ >> /dev/null 2>&1
 			if [ `getconf LONG_BIT` = "64" ]; then
 				echo -n "[3/3] Linux 64-bit PHP build available, downloading $LINUX_64_BUILD.tar.gz..."
@@ -143,22 +161,28 @@ else
 			fi
 			download_file "http://sourceforge.net/projects/pocketmine/files/builds/$LINUX_BUILD.tar.gz" | tar -zx > /dev/null 2>&1
 			chmod +x ./bin/php5/bin/*
-			echo -n " regenerating php.ini..."
-			OPCACHE_PATH=$(find "./bin/php5" -name opcache.so)
-			echo "zend_extension=\"$OPCACHE_PATH\"" > "./bin/php5/lib/php.ini"
-			echo "opcache.enable=1" >> "./bin/php5/lib/php.ini"
-			echo "opcache.enable_cli=1" >> "./bin/php5/lib/php.ini"
-			echo "opcache.save_comments=0" >> "./bin/php5/lib/php.ini"
-			echo "opcache.fast_shutdown=1" >> "./bin/php5/lib/php.ini"
-			echo "opcache.max_accelerated_files=4096" >> "./bin/php5/lib/php.ini"
-			echo "opcache.interned_strings_buffer=8" >> "./bin/php5/lib/php.ini"
-			echo "opcache.memory_consumption=128" >> "./bin/php5/lib/php.ini"
-			echo "opcache.optimization_level=0xffffffff" >> "./bin/php5/lib/php.ini"
-			echo "date.timezone=$TIMEZONE" >> "./bin/php5/lib/php.ini"
-			echo "short_open_tag=0" >> "./bin/php5/lib/php.ini"
-			echo "asp_tags=0" >> "./bin/php5/lib/php.ini"
-			echo " done"
-		else
+			echo -n " checking..."
+			if [ $(./bin/php5/bin/php -r 'echo "yes";') == "yes" ]; then
+				echo -n " regenerating php.ini..."
+				echo "zend_extension=opcache.so" > "./bin/php5/lib/php.ini"
+				echo "opcache.enable=1" >> "./bin/php5/lib/php.ini"
+				echo "opcache.enable_cli=1" >> "./bin/php5/lib/php.ini"
+				echo "opcache.save_comments=0" >> "./bin/php5/lib/php.ini"
+				echo "opcache.fast_shutdown=1" >> "./bin/php5/lib/php.ini"
+				echo "opcache.max_accelerated_files=4096" >> "./bin/php5/lib/php.ini"
+				echo "opcache.interned_strings_buffer=8" >> "./bin/php5/lib/php.ini"
+				echo "opcache.memory_consumption=128" >> "./bin/php5/lib/php.ini"
+				echo "opcache.optimization_level=0xffffffff" >> "./bin/php5/lib/php.ini"
+				echo "date.timezone=$TIMEZONE" >> "./bin/php5/lib/php.ini"
+				echo "short_open_tag=0" >> "./bin/php5/lib/php.ini"
+				echo "asp_tags=0" >> "./bin/php5/lib/php.ini"
+				echo " done"
+				alldone=yes
+			else
+				echo " invalid build detected"
+			fi
+		fi
+		if [ "$alldone" == "no" ]; then
 			set -e
 			echo "[3/3] no build found, compiling PHP"
 			exec ./src/build/compile.sh