diff --git a/docs/environment/php.md b/docs/environment/php.md
index 5423658ad..4133c3358 100644
--- a/docs/environment/php.md
+++ b/docs/environment/php.md
@@ -48,6 +48,7 @@ Bref strives to include the most common PHP extensions. If a major PHP extension
       <td  align="left" valign="top">
         <ul>
         <li>Core</li>
+        <li><a href="http://php.net/manual/en/book.bc.php">bcmath</a></li>
         <li><a href="http://php.net/manual/en/intro.ctype.php">ctype</a></li>
         <li><a href="http://php.net/manual/en/book.curl.php">curl</a></li>
         <li>date</li>
@@ -66,6 +67,7 @@ Bref strives to include the most common PHP extensions. If a major PHP extension
         <ul>
         <li><a href="http://php.net/manual/en/book.libxml.php">libxml</a></li>
         <li><a href="http://php.net/manual/en/book.mbstring.php">mbstring</a></li>
+        <li><a href="http://php.net/manual/en/book.mysqli.php">mysqli</a></li>
         <li><a href="http://php.net/manual/en/book.mysqlnd.php">mysqlnd</a></li>
         <li><a href="http://php.net/manual/en/book.opcache.php">opcache</a></li>
         <li><a href="http://php.net/manual/en/book.openssl.php">openssl</a></li>
@@ -84,6 +86,7 @@ Bref strives to include the most common PHP extensions. If a major PHP extension
         <li><a href="http://php.net/manual/en/book.session.php">session</a></li>
         <li><a href="http://php.net/manual/en/book.SimpleXML.php">SimpleXML</a></li>
         <li><a href="http://php.net/manual/en/book.sodium.php">sodium</a></li>
+        <li><a href="http://php.net/manual/en/book.soap.php">SOAP</a></li>
         <li><a href="http://php.net/manual/en/book.SPL.php">SPL</a></li>
         <li><a href="http://php.net/manual/en/book.sqlite3.php">sqlite3</a></li>
         <li><a href="http://php.net/manual/en/book.standard.php">standard</a></li>
diff --git a/docs/frameworks/laravel.md b/docs/frameworks/laravel.md
index 9bd47647b..423848fa8 100644
--- a/docs/frameworks/laravel.md
+++ b/docs/frameworks/laravel.md
@@ -39,7 +39,7 @@ Resources:
             Timeout: 30 # in seconds (API Gateway has a timeout of 30 seconds)
             Runtime: provided
             Layers:
-                - 'arn:aws:lambda:us-east-1:209497400698:layer:php-72-fpm:1'
+                - 'arn:aws:lambda:us-east-1:209497400698:layer:php-72-fpm:4'
             Events:
                 # The function will match all HTTP URLs
                 HttpRoot:
@@ -62,9 +62,9 @@ Resources:
             Runtime: provided
             Layers:
                 # PHP runtime
-                - 'arn:aws:lambda:us-east-1:209497400698:layer:php-72:1'
+                - 'arn:aws:lambda:us-east-1:209497400698:layer:php-72:4'
                 # Console layer
-                - 'arn:aws:lambda:us-east-1:209497400698:layer:console:1'
+                - 'arn:aws:lambda:us-east-1:209497400698:layer:console:4'
 
 Outputs:
     DemoHttpApi:
diff --git a/docs/frameworks/symfony.md b/docs/frameworks/symfony.md
index 2a6f388b4..aec3d3e45 100644
--- a/docs/frameworks/symfony.md
+++ b/docs/frameworks/symfony.md
@@ -39,7 +39,7 @@ Resources:
             MemorySize: 1024
             Runtime: provided
             Layers:
-                - 'arn:aws:lambda:us-east-1:209497400698:layer:php-73-fpm:1'
+                - 'arn:aws:lambda:us-east-1:209497400698:layer:php-73-fpm:4'
             Events:
                 HttpRoot:
                     Type: Api
@@ -61,8 +61,8 @@ Resources:
             Timeout: 120 # in seconds
             Runtime: provided
             Layers:
-                - 'arn:aws:lambda:us-east-1:209497400698:layer:php-73:1' # PHP
-                - 'arn:aws:lambda:us-east-1:209497400698:layer:console:1' # The "console" layer
+                - 'arn:aws:lambda:us-east-1:209497400698:layer:php-73:4' # PHP
+                - 'arn:aws:lambda:us-east-1:209497400698:layer:console:4' # The "console" layer
 
 Outputs:
     DemoApi:
diff --git a/runtime/php/layers/fpm/php.ini b/runtime/php/layers/fpm/php.ini
index ecc6d7cc8..c75564852 100644
--- a/runtime/php/layers/fpm/php.ini
+++ b/runtime/php/layers/fpm/php.ini
@@ -19,6 +19,13 @@ opcache.max_accelerated_files=10000
 
 zend_extension=opcache.so
 
+; This directive determines which super global arrays are registered when PHP
+; starts up. G,P,C,E & S are abbreviations for the following respective super
+; globals: GET, POST, COOKIE, ENV and SERVER.
+; We explicitly populate all variables else ENV is not populated by default.
+; See https://github.com/mnapoli/bref/pull/291
+variables_order="EGPCS"
+
 ; The lambda environment is not compatible with fastcgi_finish_request
 ; See https://github.com/mnapoli/bref/issues/214
 disable_functions=fastcgi_finish_request
diff --git a/runtime/php/layers/function/php.ini b/runtime/php/layers/function/php.ini
index 3cdd86a73..70597b409 100644
--- a/runtime/php/layers/function/php.ini
+++ b/runtime/php/layers/function/php.ini
@@ -24,3 +24,10 @@ opcache.memory_consumption=128
 opcache.max_accelerated_files=10000
 
 zend_extension=opcache.so
+
+; This directive determines which super global arrays are registered when PHP
+; starts up. G,P,C,E & S are abbreviations for the following respective super
+; globals: GET, POST, COOKIE, ENV and SERVER.
+; We explicitly populate all variables else ENV is not populated by default.
+; See https://github.com/mnapoli/bref/pull/291
+variables_order="EGPCS"
diff --git a/runtime/php/php.Dockerfile b/runtime/php/php.Dockerfile
index 28a13a4cd..74e6d4ef1 100644
--- a/runtime/php/php.Dockerfile
+++ b/runtime/php/php.Dockerfile
@@ -408,8 +408,10 @@ RUN set -xe \
         --with-gettext \
         --enable-mbstring \
         --with-pdo-mysql=shared,mysqlnd \
+        --with-mysqli \
         --enable-pcntl \
         --enable-zip \
+        --enable-bcmath \
         --with-pdo-pgsql=shared,${INSTALL_DIR} \
         --enable-intl=shared \
         --enable-opcache-file \
diff --git a/src/Runtime/LambdaRuntime.php b/src/Runtime/LambdaRuntime.php
index cd95474a6..9cbd0d78d 100644
--- a/src/Runtime/LambdaRuntime.php
+++ b/src/Runtime/LambdaRuntime.php
@@ -22,6 +22,12 @@
  */
 class LambdaRuntime
 {
+    /** @var resource|null */
+    private $handler;
+
+    /** @var resource|null */
+    private $returnHandler;
+
     /** @var string */
     private $apiUrl;
 
@@ -39,6 +45,27 @@ public function __construct(string $apiUrl)
         $this->apiUrl = $apiUrl;
     }
 
+    public function __destruct()
+    {
+        $this->closeHandler();
+        $this->closeReturnHandler();
+    }
+
+    private function closeHandler(): void
+    {
+        if ($this->handler !== null) {
+            curl_close($this->handler);
+            $this->handler = null;
+        }
+    }
+    private function closeReturnHandler(): void
+    {
+        if ($this->returnHandler !== null) {
+            curl_close($this->returnHandler);
+            $this->returnHandler = null;
+        }
+    }
+
     /**
      * Process the next event.
      *
@@ -70,13 +97,15 @@ public function processNextEvent(callable $handler): void
      */
     private function waitNextInvocation(): array
     {
-        $handler = curl_init("http://{$this->apiUrl}/2018-06-01/runtime/invocation/next");
-        curl_setopt($handler, CURLOPT_FOLLOWLOCATION, true);
-        curl_setopt($handler, CURLOPT_FAILONERROR, true);
+        if ($this->handler === null) {
+            $this->handler = curl_init("http://{$this->apiUrl}/2018-06-01/runtime/invocation/next");
+            curl_setopt($this->handler, CURLOPT_FOLLOWLOCATION, true);
+            curl_setopt($this->handler, CURLOPT_FAILONERROR, true);
+        }
 
         // Retrieve invocation ID
         $invocationId = '';
-        curl_setopt($handler, CURLOPT_HEADERFUNCTION, function ($ch, $header) use (&$invocationId) {
+        curl_setopt($this->handler, CURLOPT_HEADERFUNCTION, function ($ch, $header) use (&$invocationId) {
             if (! preg_match('/:\s*/', $header)) {
                 return strlen($header);
             }
@@ -90,15 +119,17 @@ private function waitNextInvocation(): array
 
         // Retrieve body
         $body = '';
-        curl_setopt($handler, CURLOPT_WRITEFUNCTION, function ($ch, $chunk) use (&$body) {
+        curl_setopt($this->handler, CURLOPT_WRITEFUNCTION, function ($ch, $chunk) use (&$body) {
             $body .= $chunk;
 
             return strlen($chunk);
         });
 
-        curl_exec($handler);
-        if (curl_error($handler)) {
-            throw new \Exception('Failed to fetch next Lambda invocation: ' . curl_error($handler));
+        curl_exec($this->handler);
+        if (curl_errno($this->handler) > 0) {
+            $message = curl_error($this->handler);
+            $this->closeHandler();
+            throw new \Exception('Failed to fetch next Lambda invocation: ' . $message);
         }
         if ($invocationId === '') {
             throw new \Exception('Failed to determine the Lambda invocation ID');
@@ -106,7 +137,6 @@ private function waitNextInvocation(): array
         if ($body === '') {
             throw new \Exception('Empty Lambda runtime API response');
         }
-        curl_close($handler);
 
         $event = json_decode($body, true);
 
@@ -160,27 +190,28 @@ private function signalFailure(string $invocationId, \Throwable $error): void
      */
     public function failInitialization(string $message, ?\Throwable $error = null): void
     {
-        if ($error instanceof \Exception) {
-            $errorMessage = get_class($error) . ': ' . $error->getMessage();
-        } else {
-            $errorMessage = $error->getMessage();
-        }
-
         // Log the exception in CloudWatch
         echo "$message\n";
-        printf(
-            "Fatal error: %s in %s:%d\nStack trace:\n%s",
-            $errorMessage,
-            $error->getFile(),
-            $error->getLine(),
-            $error->getTraceAsString()
-        );
+        if ($error) {
+            if ($error instanceof \Exception) {
+                $errorMessage = get_class($error) . ': ' . $error->getMessage();
+            } else {
+                $errorMessage = $error->getMessage();
+            }
+            printf(
+                "Fatal error: %s in %s:%d\nStack trace:\n%s",
+                $errorMessage,
+                $error->getFile(),
+                $error->getLine(),
+                $error->getTraceAsString()
+            );
+        }
 
         $url = "http://{$this->apiUrl}/2018-06-01/runtime/init/error";
         $this->postJson($url, [
             'errorMessage' => $message . ' ' . $error->getMessage(),
-            'errorType' => get_class($error),
-            'stackTrace' => explode(PHP_EOL, $error->getTraceAsString()),
+            'errorType' => $error ? get_class($error) : 'Internal',
+            'stackTrace' => $error ? explode(PHP_EOL, $error->getTraceAsString()) : [],
         ]);
 
         exit(1);
@@ -196,21 +227,24 @@ private function postJson(string $url, $data): void
             throw new \Exception('Failed encoding Lambda JSON response: ' . json_last_error_msg());
         }
 
-        $handler = curl_init($url);
-        curl_setopt($handler, CURLOPT_CUSTOMREQUEST, 'POST');
-        curl_setopt($handler, CURLOPT_RETURNTRANSFER, true);
-        curl_setopt($handler, CURLOPT_FAILONERROR, true);
-        curl_setopt($handler, CURLOPT_POSTFIELDS, $jsonData);
-        curl_setopt($handler, CURLOPT_HTTPHEADER, [
+        if ($this->returnHandler === null) {
+            $this->returnHandler = curl_init();
+            curl_setopt($this->returnHandler, CURLOPT_CUSTOMREQUEST, 'POST');
+            curl_setopt($this->returnHandler, CURLOPT_RETURNTRANSFER, true);
+            curl_setopt($this->returnHandler, CURLOPT_FAILONERROR, true);
+        }
+
+        curl_setopt($this->returnHandler, CURLOPT_URL, $url);
+        curl_setopt($this->returnHandler, CURLOPT_POSTFIELDS, $jsonData);
+        curl_setopt($this->returnHandler, CURLOPT_HTTPHEADER, [
             'Content-Type: application/json',
             'Content-Length: ' . strlen($jsonData),
         ]);
-        curl_exec($handler);
-        if (curl_error($handler)) {
-            $errorMessage = curl_error($handler);
-            curl_close($handler);
+        curl_exec($this->returnHandler);
+        if (curl_errno($this->returnHandler) > 0) {
+            $errorMessage = curl_error($this->returnHandler);
+            $this->closeReturnHandler();
             throw new \Exception('Error while calling the Lambda runtime API: ' . $errorMessage);
         }
-        curl_close($handler);
     }
 }
diff --git a/template.yaml b/template.yaml
index 26b0ff9c3..ccb5e4100 100644
--- a/template.yaml
+++ b/template.yaml
@@ -16,7 +16,7 @@ Resources:
             Handler: demo/function.php
             Runtime: provided
             Layers:
-                - 'arn:aws:lambda:us-east-2:209497400698:layer:php-72:3'
+                - 'arn:aws:lambda:us-east-2:209497400698:layer:php-72:4'
 
     HttpFunction:
         Type: AWS::Serverless::Function
@@ -29,7 +29,7 @@ Resources:
             MemorySize: 1024 # The memory size is related to the pricing and CPU power
             Runtime: provided
             Layers:
-                - 'arn:aws:lambda:us-east-2:209497400698:layer:php-72-fpm:3'
+                - 'arn:aws:lambda:us-east-2:209497400698:layer:php-72-fpm:4'
             Events:
                 HttpRoot:
                     Type: Api
@@ -51,8 +51,8 @@ Resources:
             Handler: demo/console.php
             Runtime: provided
             Layers:
-                - 'arn:aws:lambda:us-east-2:209497400698:layer:php-72:3'
-                - 'arn:aws:lambda:us-east-2:209497400698:layer:console:3'
+                - 'arn:aws:lambda:us-east-2:209497400698:layer:php-72:4'
+                - 'arn:aws:lambda:us-east-2:209497400698:layer:console:4'
 
 Outputs:
     DemoHttpApi:
diff --git a/template/console/template.yaml b/template/console/template.yaml
index c95b36c2c..7e31942f8 100644
--- a/template/console/template.yaml
+++ b/template/console/template.yaml
@@ -14,5 +14,5 @@ Resources:
             MemorySize: 1024 # The memory size is related to the pricing and CPU power
             Runtime: provided
             Layers:
-                - 'arn:aws:lambda:us-east-1:209497400698:layer:php-73:1' # PHP
-                - 'arn:aws:lambda:us-east-1:209497400698:layer:console:1' # The "console" layer
+                - 'arn:aws:lambda:us-east-1:209497400698:layer:php-73:4' # PHP
+                - 'arn:aws:lambda:us-east-1:209497400698:layer:console:4' # The "console" layer
diff --git a/template/default/template.yaml b/template/default/template.yaml
index e73d0687a..387445127 100644
--- a/template/default/template.yaml
+++ b/template/default/template.yaml
@@ -14,4 +14,4 @@ Resources:
             MemorySize: 1024 # The memory size is related to the pricing and CPU power
             Runtime: provided
             Layers:
-                - 'arn:aws:lambda:us-east-1:209497400698:layer:php-73:1'
+                - 'arn:aws:lambda:us-east-1:209497400698:layer:php-73:4'
diff --git a/template/http/template.yaml b/template/http/template.yaml
index 15d1e02f4..5efda1f3e 100644
--- a/template/http/template.yaml
+++ b/template/http/template.yaml
@@ -14,7 +14,7 @@ Resources:
             MemorySize: 1024 # The memory size is related to the pricing and CPU power
             Runtime: provided
             Layers:
-                - 'arn:aws:lambda:us-east-1:209497400698:layer:php-73-fpm:1'
+                - 'arn:aws:lambda:us-east-1:209497400698:layer:php-73-fpm:4'
             Events:
                 # The function will match all HTTP URLs
                 HttpRoot:
diff --git a/tests/Sam/Php/function.php b/tests/Sam/Php/function.php
index 202e8e32f..113c39f39 100644
--- a/tests/Sam/Php/function.php
+++ b/tests/Sam/Php/function.php
@@ -11,6 +11,14 @@
         return ini_get_all(null, false);
     }
 
+    if ($event['env'] ?? false) {
+        return [
+            '$_ENV' => $_ENV['FOO'] ?? null,
+            '$_SERVER' => $_SERVER['FOO'] ?? null,
+            'getenv' => getenv('FOO'),
+        ];
+    }
+
     if ($event['stdout'] ?? false) {
         echo 'This is a test log by writing to stdout';
     }
diff --git a/tests/Sam/PhpFpm/index.php b/tests/Sam/PhpFpm/index.php
index d13ed91c2..aed110125 100644
--- a/tests/Sam/PhpFpm/index.php
+++ b/tests/Sam/PhpFpm/index.php
@@ -12,6 +12,16 @@
     return;
 }
 
+if ($_GET['env'] ?? false) {
+    header('Content-Type: application/json');
+    echo json_encode([
+        '$_ENV' => $_ENV['FOO'] ?? null,
+        '$_SERVER' => $_SERVER['FOO'] ?? null,
+        'getenv' => getenv('FOO'),
+    ], JSON_PRETTY_PRINT);
+    return;
+}
+
 if ($_GET['stderr'] ?? false) {
     $stderr = fopen('php://stderr', 'a');
     fwrite($stderr, 'This is a test log into stderr');
diff --git a/tests/Sam/PhpFpmRuntimeTest.php b/tests/Sam/PhpFpmRuntimeTest.php
index 2a7f5ec8e..ac0710f55 100644
--- a/tests/Sam/PhpFpmRuntimeTest.php
+++ b/tests/Sam/PhpFpmRuntimeTest.php
@@ -93,48 +93,53 @@ public function test warnings are logged()
     public function test php extensions()
     {
         $response = $this->invoke('/?extensions=1');
+        $extensions = $this->getJsonBody($response);
+        sort($extensions);
 
         self::assertEquals([
             'Core',
-            'date',
-            'libxml',
-            'openssl',
-            'pcre',
-            'sqlite3',
-            'zlib',
+            'PDO',
+            'Phar',
+            'Reflection',
+            'SPL',
+            'SimpleXML',
+            'Zend OPcache',
+            'bcmath',
+            'cgi-fcgi',
             'ctype',
             'curl',
+            'date',
             'dom',
-            'hash',
+            'exif',
             'fileinfo',
             'filter',
             'ftp',
             'gettext',
-            'SPL',
+            'hash',
             'iconv',
             'json',
+            'libxml',
             'mbstring',
+            'mysqli',
+            'mysqlnd',
+            'openssl',
             'pcntl',
-            'session',
-            'PDO',
+            'pcre',
             'pdo_sqlite',
-            'standard',
             'posix',
             'readline',
-            'Reflection',
-            'Phar',
-            'SimpleXML',
+            'session',
+            'soap',
             'sodium',
-            'exif',
+            'sqlite3',
+            'standard',
             'tokenizer',
             'xml',
             'xmlreader',
             'xmlwriter',
             'zip',
-            'mysqlnd',
-            'cgi-fcgi',
-            'Zend OPcache',
-        ], $this->getJsonBody($response), $this->logs);
+            'zlib',
+        ], $extensions, $this->logs);
     }
 
     /**
@@ -172,6 +177,17 @@ public function test php config()
         ], $this->getJsonBody($response), false, $this->logs);
     }
 
+    public function test environment variables()
+    {
+        $response = $this->invoke('/?env=1');
+
+        self::assertEquals([
+            '$_ENV' => 'bar',
+            '$_SERVER' => 'bar',
+            'getenv' => 'bar',
+        ], $this->getJsonBody($response), $this->logs);
+    }
+
     /**
      * Check some PHP config values
      */
diff --git a/tests/Sam/PhpRuntimeTest.php b/tests/Sam/PhpRuntimeTest.php
index 6fc09cb3b..5d9f81d2b 100644
--- a/tests/Sam/PhpRuntimeTest.php
+++ b/tests/Sam/PhpRuntimeTest.php
@@ -61,7 +61,7 @@ public function test uncaught exception appears in logs and is reported
 
         // We don't assert on complete exception traces because they will change over time
         $expectedLogs = <<<LOGS
-Fatal error: Uncaught Exception: This is an uncaught exception in /var/task/tests/Sam/Php/function.php:27
+Fatal error: Uncaught Exception: This is an uncaught exception in /var/task/tests/Sam/Php/function.php:35
 Stack trace:
 #0 /var/task/
 LOGS;
@@ -86,7 +86,7 @@ public function test error appears in logs and is reported as an invoc
 
         // We don't assert on complete exception traces because they will change over time
         $expectedLogs = <<<LOGS
-Fatal error: strlen() expects exactly 1 parameter, 0 given in /var/task/tests/Sam/Php/function.php:31
+Fatal error: strlen() expects exactly 1 parameter, 0 given in /var/task/tests/Sam/Php/function.php:39
 Stack trace:
 #0 /var/task/
 LOGS;
@@ -111,7 +111,7 @@ public function test fatal error appears in logs and is reported as an
 
         // We don't assert on complete exception traces because they will change over time
         $expectedLogs = <<<LOGS
-Fatal error: require(): Failed opening required 'foo' (include_path='.:/opt/bref/lib/php') in /var/task/tests/Sam/Php/function.php on line 35
+Fatal error: require(): Failed opening required 'foo' (include_path='.:/opt/bref/lib/php') in /var/task/tests/Sam/Php/function.php on line
 LOGS;
         self::assertContains($expectedLogs, $logs);
 
@@ -139,46 +139,50 @@ public function test php extensions()
         [$result, $logs] = $this->invokeLambda([
             'extensions' => true,
         ]);
+        sort($result);
 
         self::assertEquals([
             'Core',
-            'date',
-            'libxml',
-            'openssl',
-            'pcre',
-            'sqlite3',
-            'zlib',
+            'PDO',
+            'Phar',
+            'Reflection',
+            'SPL',
+            'SimpleXML',
+            'Zend OPcache',
+            'bcmath',
             'ctype',
             'curl',
+            'date',
             'dom',
-            'hash',
+            'exif',
             'fileinfo',
             'filter',
             'ftp',
             'gettext',
-            'SPL',
+            'hash',
             'iconv',
             'json',
+            'libxml',
             'mbstring',
+            'mysqli',
+            'mysqlnd',
+            'openssl',
             'pcntl',
-            'session',
-            'PDO',
+            'pcre',
             'pdo_sqlite',
-            'standard',
             'posix',
             'readline',
-            'Reflection',
-            'Phar',
-            'SimpleXML',
+            'session',
+            'soap',
             'sodium',
-            'exif',
+            'sqlite3',
+            'standard',
             'tokenizer',
             'xml',
             'xmlreader',
             'xmlwriter',
             'zip',
-            'mysqlnd',
-            'Zend OPcache',
+            'zlib',
         ], $result, $logs);
     }
 
@@ -223,6 +227,19 @@ public function test php config()
         ], $result, $logs);
     }
 
+    public function test environment variables()
+    {
+        [$result, $logs] = $this->invokeLambda([
+            'env' => true,
+        ]);
+
+        self::assertEquals([
+            '$_ENV' => 'bar',
+            '$_SERVER' => 'bar',
+            'getenv' => 'bar',
+        ], $result, $logs);
+    }
+
     /**
      * @param mixed $event
      */
diff --git a/tests/Sam/template.yaml b/tests/Sam/template.yaml
index 908050b03..f54348509 100644
--- a/tests/Sam/template.yaml
+++ b/tests/Sam/template.yaml
@@ -10,7 +10,10 @@ Resources:
             Handler: tests/Sam/Php/function.php
             Runtime: provided
             Layers:
-                - 'arn:aws:lambda:us-east-1:209497400698:layer:php-73:2'
+                - 'arn:aws:lambda:us-east-1:209497400698:layer:php-73:4'
+            Environment:
+                Variables:
+                    FOO: bar
 
     HttpFunction:
         Type: AWS::Serverless::Function
@@ -20,13 +23,16 @@ Resources:
             Handler: tests/Sam/PhpFpm/index.php
             Runtime: provided
             Layers:
-                - 'arn:aws:lambda:us-east-1:209497400698:layer:php-73-fpm:2'
+                - 'arn:aws:lambda:us-east-1:209497400698:layer:php-73-fpm:4'
             Events:
                 HttpRoot:
                     Type: Api
                     Properties:
                         Path: /
                         Method: ANY
+            Environment:
+                Variables:
+                    FOO: bar
 
     MissingHandler:
         Type: AWS::Serverless::Function
@@ -36,7 +42,7 @@ Resources:
             Handler: tests/Sam/PhpFpm/UNKNOWN.php
             Runtime: provided
             Layers:
-                - 'arn:aws:lambda:us-east-1:209497400698:layer:php-73-fpm:2'
+                - 'arn:aws:lambda:us-east-1:209497400698:layer:php-73-fpm:4'
             Events:
                 HttpRoot:
                     Type: Api