super simple php/html template

simple-template.php

<?php

function html($name, $attr = [], $value)
{
    $s = "<{$name} ";
    
    if (!empty($attr)) {
        foreach ($attr as $key => $val) {
            $s .= "{$key}=\"{$val}\" ";
        }
    }
    
    $s = trim($s);
    
    $s .= ">";
    $s .= is_callable($value) ? $value() : $value;
    $s .= "</{$name}>";
    
    return $s;
}

echo html("div", ['class' => 'wrapper'], function () {
   return
        html("p", null, "lorem ipsum")
        . html("p", null, "lorem ipsum");
});

// <div class="wrapper"><p>lorem ipsum</p><p>lorem ipsum</p></div>