PHP( Personal Home Page: Hypertext Preprocessor ): PHP, short for "Personal Home Page: Hypertext Preprocessor," is a powerful open-source server-side scripting language widely used for web development. This article will guide you through the fundamentals of Core PHP, helping you build a strong foundation for creating dynamic web applications. We'll explore essential concepts, syntax, data types, operators, functions, loops, arrays, super global variables, and more. Syntax: PHP scripts are embedded within HTML using the PHP opening tags <?php or <? and closed with ?>. The <?= expression ?> format is used for simple echo statements. Variables: Variables in PHP are declared using the $ symbol. Professional practice is to use a meaningful name starting with $. $x=12; $y=23; $z="hello"; $a=2.53; $b=true; $c=23.34e45; var_dump($x); //int(12) echo "<br>"; var_dump($y); //int(23) echo "<br>"; var_du...