I do not have much knowledge and I do not know if the way I'm doing is correct or has some negative point. Are there any better options for me to do?
<?php
$ht = '<div class="panel panel-headline">';
$ht .= '<div class="panel-heading">';
$ht .= '<form id="searchthis" method="get">';
$ht .= '<input id="namanyay-search-box" name="search" size="40" type="text" placeholder="Search"/>';
$ht .= '<button id="namanyay-search-btn" type="submit" class="btn btn-primary"><i class="fa fa-search" aria-hidden="true"></i></button>';
$ht .= '</form>';
$ht .= '<h3 class="panel-title">Manage OneDrive Videos</h3>';
$ht .= '</div>';
$ht .= '<div class="panel-body" style="overflow: auto;">';
$ht .= '<table class="table table-hover">';
echo $ht;
?>