Read a file data using file browser in Jom social (Joomla ) using PHP

It is bit typical to add own php code to take a file into the system using a file browser.
Here below I have attached the code

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jimport('joomla.filesystem.file');
$jinput = JFactory::getApplication()->input;
$fileInput = new JInput($_FILES);
$file = $fileInput->get('thumb', null, 'array');

 
if(isset($file) && !empty($file['name'])) {
$filename = JFile::makeSafe($file['name']);
$src = $file['tmp_name'];
$data['image']=$filename;

 }
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Below I have attached the client code below.

<div class="fileUpload btn btn-primary">

<span>Upload</span>

<input id="thumb" class="upload" type="file" style="position: absolute; top: 0; right: 0; margin: 0; padding: 0; font-size: 20px; cursor: pointer;opacity: 0;filter: alpha(opacity=0); width:150px;" name="thumb">

</div>