📅  最后修改于: 2023-12-03 15:18:32.794000             🧑  作者: Mango
PHP is a widely-used open source scripting language that is especially suited for web development and can be embedded into HTML. The gs=3 in the title refers to the version of PHP that is being used.
PHP was originally created in 1994 by Rasmus Lerdorf as a set of Common Gateway Interface (CGI) scripts that he used to track visitors to his personal website. Over time, other developers began to contribute to PHP, and it quickly evolved into a full-fledged scripting language that could be used for more complex web development tasks.
PHP has many features that make it a popular choice for web development, including:
Easy to learn: PHP syntax is similar to many other programming languages, so it is easy for developers to get started with.
Open source: PHP is free to download and use, which makes it accessible to a wide range of developers.
Easy to integrate with HTML: PHP code can be embedded into HTML pages, which allows developers to create dynamic web pages.
Cross-platform compatibility: PHP code can be run on most operating systems, including Windows, Linux, and macOS.
Large community of developers: PHP has a large community of developers who provide support, create new tools, and contribute to the language's development.
Here are a few examples of PHP code:
// Prints "Hello, World!"
echo "Hello, World!";
// Creates a variable and assigns it a value
$name = "John Smith";
// Prints the value of the variable
echo "My name is " . $name;
// Loops through an array of names and prints them
$names = array("John", "Mary", "Tom");
foreach ($names as $name) {
echo $name . "<br>";
}
PHP is a powerful and flexible scripting language that is widely used for web development. Whether you are creating a simple website or a complex web application, PHP has the tools and features you need to get the job done.