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Get certified by completing the PHP course. Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML and more.
W3Schools Tryit Editor. Run . Get your own PHP server Result Size: 497 x 414.
What Can PHP Do? PHP can generate dynamic page content; PHP can create, open, read, write, delete, and close files on the server; PHP can collect form data; PHP can send and receive cookies; PHP can add, delete, modify data in your database; PHP can be used to control user-access; PHP can encrypt data; With PHP you are not limited to output HTML.
PHP Strings. Get the length of a string - strlen () Count the number of words in a string - str_word_count () Reverse a string - strrev () Search for a specific text within a string - strpos () Replace text within a string - str_replace () Strings explained.
GET vs. POST. Both GET and POST create an array (e.g. array ( key1 => value1, key2 => value2, key3 => value3, ...)). This array holds key/value pairs, where keys are the names of the form controls and values are the input data from the user. Both GET and POST are treated as $_GET and $_POST.
PHP Built-in Functions. PHP has over 1000 built-in functions that can be called directly, from within a script, to perform a specific task. Please check out our PHP reference for a complete overview of the PHP built-in functions.
PHP Compiler (Editor) With our online PHP compiler, you can edit PHP code, and view the result in your browser.
With PHP, you can connect to and manipulate databases. MySQL is the most popular database system used with PHP.
PHP Array Types. In PHP, there are three types of arrays: Indexed arrays - Arrays with a numeric index. Associative arrays - Arrays with named keys. Multidimensional arrays - Arrays containing one or more arrays.
PHP Array Functions. Deprecated from PHP 7.2. Returns the current key and value pair from an array. Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML and more.