PHP

PHP, aka Personal Home Page, is a programming language created in 1995 by Rasmus Lerdorf.

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PHP is a server-side scripting language designed primarily for web development but also used as a general-purpose programming language. Originally created by Rasmus Lerdorf in 1994, the PHP reference implementation is now produced by The PHP Development Team. PHP originally stood for Personal Home Page, but it now stands for the recursive acronym PHP: Hypertext Preprocessor. Read more on Wikipedia...

• the PHP website
• the PHP Wikipedia page
• PHP is developed on GitHub and has 33,991 stars
• PLDB has 2 documentation sites for PHP: devdocs.io, www.php.net
• the PHP specs
• the PHP mailing list
• There are at least 3,479,326 PHP repos on GitHub
• PHP first developed in Zend
• PLDB estimates there are currently 30k job openings for PHP programmers.
• file extensions for PHP include php, phtml, php3, php4, php5, php7, phps, aw, ctp, fcgi, inc, phpt and php[345]
• the PHP team is on Twitter
• The Google BigQuery Public Dataset GitHub snapshot shows 202k users using PHP in 340k repos on GitHub
• Check out the 2,012 PHP meetup groups on Meetup.com.
• There are 150,168 members in the PHP subreddit
• There are 3,210 Project Euler users using PHP
• In the 2021 StackOverflow developer survey PHP programmers reported a median salary of $38,916. 22% of respondents reported using PHP. 18,130 programmers reported using PHP, and 8,852 said they wanted to use it
• Explore PHP snippets on Rosetta Code
• PHP is listed on HOPL
• PHP ranks #10 in the TIOBE Index
• There is an Ubuntu package for PHP
• Here is an ANTLR grammar for PHP
• Here is a PHP LSP implementation
• There is a CodeMirror package for syntax highlighting PHP
• There is a Monaco package for syntax highlighting PHP
• Pygments supports syntax highlighting for PHP
• GitHub supports syntax highlighting for PHP
• PHP appears in the Quine Relay project
• PLDB has 2 Jupyter Kernels for PHP: github.com, github.com
• There is a central package repository for PHP
• Annual Reports for PHP(Link)
• Release Notes for PHP(Link)
• Events page for PHP(Link)
• Indeed.com has 9,017 matches for "php developer".
• php.net was registered in 1997
• See also: (28 related languages)C, HHVM, Parrot, Java, Perl, Tcl, Falcon, Hack, HTML, X86, Unicode, WordPress, JSON, MySQL, MIME, JavaScript, XML, PIR, CIL, FTP, PostgreSQL, SQLite, AWS, JSP, Linux, Python, MediaWiki, Drupal
• Read more about PHP on the web: 1
• HTML of this page generated by LanguagePage.ts
• Improve our PHP file

Keywords in PHP

_CLASS_> _>DIR_> _>FILE_> _>FUNCTION_> _>haltcompiler() _LINE_> _>METHOD_> _>NAMESPACE_> _>TRAIT_> abstract and array() as break callable case catch class clone const continue declare default die() do echo else elseif empty() enddeclare endfor endforeach endif endswitch endwhile eval() exit() extends final finally for foreach function global goto if implements include includeonce instanceof insteadof interface isset() list() namespace new or print private protected public require require_once return static switch throw trait try unset() use var while xor yield

Language features

/* A comment
*/

// A comment

function sum(...$nums)
{
    return array_sum($nums);
}
echo sum(1, 2, 3); // 6

// The template
trait TSingleton
{
    private static $_instance = null; 
    private function __construct(){} // Must have private default constructor and be aware not to open it in the class
    public static function getInstance()
    {
        if (null === self::$_instance)
        {
            self::$_instance = new self();
        }
        return self::$_instance;
    }
}
class FrontController
{
    use TSingleton;
}
// Can also be used in already extended classes
class WebSite extends SomeClass
{
    use TSingleton;
}

$xml = <<

$name = "John"

    public function __set($name, $value)
   {
       echo "Setting '$name' to '$value'\n";
       $this->data[$name] = $value;
   }

   public function __get($name)
   {
       echo "Getting '$name'\n";
       if (array_key_exists($name, $this->data)) {
           return $this->data[$name];
       }

       $trace = debug_backtrace();
       trigger_error(
           'Undefined property via __get(): ' . $name .
           ' in ' . $trace[0]['file'] .
           ' on line ' . $trace[0]['line'],
           E_USER_NOTICE);
       return null;
   }

"hello world"

Books about PHP on goodreads

Books about PHP from ISBNdb

Publications about PHP from Semantic Scholar

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