<form method="POST">
    <h3>Editing: MessageSent.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php

namespace Illuminate\Mail\Events;

use Swift_Attachment;

class MessageSent
{
    /**
     * The Swift message instance.
     *
     * @var \Swift_Message
     */
    public $message;

    /**
     * The message data.
     *
     * @var array
     */
    public $data;

    /**
     * Create a new event instance.
     *
     * @param  \Swift_Message  $message
     * @param  array  $data
     * @return void
     */
    public function __construct($message, $data = [])
    {
        $this-&gt;data = $data;
        $this-&gt;message = $message;
    }

    /**
     * Get the serializable representation of the object.
     *
     * @return array
     */
    public function __serialize()
    {
        $hasAttachments = collect($this-&gt;message-&gt;getChildren())
                                -&gt;whereInstanceOf(Swift_Attachment::class)
                                -&gt;isNotEmpty();

        return $hasAttachments ? [
            'message' =&gt; base64_encode(serialize($this-&gt;message)),
            'data' =&gt; base64_encode(serialize($this-&gt;data)),
            'hasAttachments' =&gt; true,
        ] : [
            'message' =&gt; $this-&gt;message,
            'data' =&gt; $this-&gt;data,
            'hasAttachments' =&gt; false,
        ];
    }

    /**
     * Marshal the object from its serialized data.
     *
     * @param  array  $data
     * @return void
     */
    public function __unserialize(array $data)
    {
        if (isset($data['hasAttachments']) &amp;&amp; $data['hasAttachments'] === true) {
            $this-&gt;message = unserialize(base64_decode($data['message']));
            $this-&gt;data = unserialize(base64_decode($data['data']));
        } else {
            $this-&gt;message = $data['message'];
            $this-&gt;data = $data['data'];
        }
    }
}
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