3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = 'writing code'; echo "<h1 class=\"hstyle4\">Hello World</h1>"; echo "<p>I am {$foo}, specifically HTML, inside of PHP using echo."; echo 'but I could just as easily have broken it into html and used only what I needed.</p>';
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.5 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
<h1 class="hstyle4">Hello World</h1><p>I am writing code, specifically HTML, inside of PHP using echo.but I could just as easily have broken it into html and used only what I needed.</p>

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