The document discusses various methods available in the Object namespace in Prototype.js, including clone(), extend(), inspect(), keys(), values(), and toJSON(). clone() performs a shallow copy of an object. extend() copies properties from one object to another. inspect() returns a string representation of an object. keys() and values() return arrays of an object's property names and values respectively. toJSON() returns a JSON string from an object.
The document discusses different types of arrays in PHP, including numeric index arrays, associative arrays, and multidimensional arrays. Numeric index arrays use integers to identify array elements, associative arrays use named keys, and multidimensional arrays contain arrays within other arrays. Examples are provided for each type of array to demonstrate their syntax and usage.
PHP is a scripting language originally designed for web development to produce dynamic web pages. It is especially suited for server-side web development. PHP code is embedded into HTML and executed by the PHP runtime on the web server to create dynamic content. A sample PHP code displays "Hello World" by echoing the text. PHP supports various data types including integers, arrays, strings, and resources. Code optimizers aim to improve PHP performance by reducing code size and execution time. PHP includes many open source libraries and allows developers to extend its functionality through extensions written in C.
PHP is a loosely typed scripting language commonly used for web development. It was created by Rasmus Lerdorf in 1995 and has evolved through several versions. PHP code is interpreted at runtime and allows for features like conditionals, loops, functions, classes, and objects to build dynamic web applications.
The document discusses various methods available in the Object namespace in Prototype.js, including clone(), extend(), inspect(), keys(), values(), and toJSON(). clone() performs a shallow copy of an object. extend() copies properties from one object to another. inspect() returns a string representation of an object. keys() and values() return arrays of an object's property names and values respectively. toJSON() returns a JSON string from an object.
The document discusses different types of arrays in PHP, including numeric index arrays, associative arrays, and multidimensional arrays. Numeric index arrays use integers to identify array elements, associative arrays use named keys, and multidimensional arrays contain arrays within other arrays. Examples are provided for each type of array to demonstrate their syntax and usage.
PHP is a scripting language originally designed for web development to produce dynamic web pages. It is especially suited for server-side web development. PHP code is embedded into HTML and executed by the PHP runtime on the web server to create dynamic content. A sample PHP code displays "Hello World" by echoing the text. PHP supports various data types including integers, arrays, strings, and resources. Code optimizers aim to improve PHP performance by reducing code size and execution time. PHP includes many open source libraries and allows developers to extend its functionality through extensions written in C.
PHP is a loosely typed scripting language commonly used for web development. It was created by Rasmus Lerdorf in 1995 and has evolved through several versions. PHP code is interpreted at runtime and allows for features like conditionals, loops, functions, classes, and objects to build dynamic web applications.
2. isset() überprüft, ob eine Variable existiert $status = $isset($_POST['absenden']) $status erhält den Wert "true", wenn der Absenden-Knopf ( name = "absenden" ) betätigt wurde. Beispiel: if ($status) { echo "Sie haben den Absendenknopf betätigt."; } elseif (!$status) { echo "Sie haben den Absendenknopf nicht betätigt."; }