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PHP is a general-purpose scripting language geared towards web development, created by Rasmus Lerdorf in 1993 and released in 1995. Learn about its evolution, syntax, implementation, popularity, and applications on various platforms and frameworks.
W3Schools is a freemium educational website for learning coding online, launched in 1998 by Refsnes Data in Norway. It offers courses, tutorials, templates, and a live editor for various web technologies, such as HTML, CSS, JavaScript, Python, and more.
Learn about the standard codes for the names of countries and their subdivisions, maintained by the International Organization for Standardization (ISO). Find the ISO 3166-1 alpha-2, alpha-3 and numeric codes, the ISO 3166-2 subdivision codes and the Internet country code top-level domains for each of the 249 countries.
Learn about the physical and hormonal changes that happen during puberty for girls and boys. See pictures and descriptions of breast growth, genital changes, hair growth, acne, and more.
Identify possible conditions and treatment related to your symptoms by selecting them on a body map. This tool does not provide medical advice and is not a substitute for professional diagnosis or treatment.
Learn how to do nine exercises that can help ease sciatica pain by stretching the muscles and nerves involved. These stretches include seated, standing, and lying positions that target the glutes ...
Learn about the signs and causes of vitamin D deficiency, a condition that can weaken your bones and muscles and affect your overall health. Find out how to prevent and treat low vitamin D levels ...
Learn about the common causes of high cholesterol, such as diet, lifestyle, and genetics. Find out what can cause a sudden spike in cholesterol, such as coffee, stress, smoking, and medications.