remove bcmath dependency, fallback to BigInteger if neccessary

Author: ramunasd

PhpAmqpLib/Channel/AMQPChannel.php

@@ -866,14 +866,15 @@ protected function internal_ack_handler($delivery_tag, $multiple, $handler)
      */
     protected function get_keys_less_or_equal(array $messages, $value)
     {
+        $value = (int) $value;
         $keys = array_reduce(
             array_keys($messages),
 
             /**
              * @param string $key
              */
             function ($keys, $key) use ($value) {
-                if (bccomp($key, $value, 0) <= 0) {
+                if ($key <= $value) {
                     $keys[] = $key;
                 }
 
@@ -1181,7 +1182,7 @@ public function basic_publish(
 
         if ($this->next_delivery_tag > 0) {
             $this->published_messages[$this->next_delivery_tag] = $msg;
-            $this->next_delivery_tag = bcadd($this->next_delivery_tag, '1', 0);
+            $this->next_delivery_tag++;
         }
     }
 
@@ -1241,7 +1242,7 @@ public function publish_batch()
 
             if ($this->next_delivery_tag > 0) {
                 $this->published_messages[$this->next_delivery_tag] = $msg;
-                $this->next_delivery_tag = bcadd($this->next_delivery_tag, '1', 0);
+                $this->next_delivery_tag++;
             }
         }
 

PhpAmqpLib/Channel/AbstractChannel.php

@@ -299,11 +299,11 @@ protected function createMessage($propertyReader, $contentReader)
             ->load_properties($propertyReader)
             ->setBodySize($contentReader->read_longlong());
 
-        while (bccomp($message->getBodySize(), $bodyReceivedBytes, 0) == 1) {
+        while ($message->getBodySize() > $bodyReceivedBytes) {
             list($frame_type, $payload) = $this->next_frame();
 
             $this->validate_body_frame($frame_type);
-            $bodyReceivedBytes = bcadd($bodyReceivedBytes, mb_strlen($payload, 'ASCII'), 0);
+            $bodyReceivedBytes += mb_strlen($payload, 'ASCII');
 
             if (is_int($this->maxBodySize) && $bodyReceivedBytes > $this->maxBodySize ) {
                 $message->setIsTruncated(true);

PhpAmqpLib/Wire/AMQPDecimal.php

@@ -2,6 +2,7 @@
 namespace PhpAmqpLib\Wire;
 
 use PhpAmqpLib\Exception\AMQPOutOfBoundsException;
+use phpseclib\Math\BigInteger;
 
 /**
  * AMQP protocol decimal value.
@@ -42,7 +43,10 @@ public function __construct($n, $e)
      */
     public function asBCvalue()
     {
-        return bcdiv($this->n, bcpow(10, $this->e));
+        $n = new BigInteger($this->n);
+        $e = new BigInteger('1' . str_repeat('0', $this->e));
+        list($q) = $n->divide($e);
+        return $q->toString();
     }
 
     /**