PHP
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PHP is a general-purpose scripting language geared towards web development. It was originally created by Danish-Canadian programmer Rasmus Lerdorf in 1993 and released in 1995. The PHP reference implementation is now produced by the PHP Group. PHP was originally an abbreviation of Personal Home Page, but it now stands for the recursive initialism PHP: Hypertext Preprocessor.
This is an example of PHP code for the WordPress content management system.
Image: Rasmus Lerdorf cropped
Image: Andi Gutmans 1
Image: Zeev Suraski 2005 cropped
C (programming language)
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C is a general-purpose computer programming language. It was created in the 1970s by Dennis Ritchie, and remains very widely used and influential. By design, C's features cleanly reflect the capabilities of the targeted CPUs. It has found lasting use in operating systems, device drivers, and protocol stacks, but its use in application software has been decreasing. C is commonly used on computer architectures that range from the largest supercomputers to the smallest microcontrollers and embedded systems.
Dennis Ritchie (right), the inventor of the C programming language, with Ken Thompson
"Hello, World!" program by Brian Kernighan (1978)