Artículos sobre: Tecnología al Día

The special NULL value represents a variable with no value. NULL is the only possible value of type NULL. Note: The null type was introduced

To create a new object, use the new statement to instantiate a class: <?php class foo { function do_foo() { echo «Doing foo.»; } }

An array in PHP is actually an ordered map. A map is a type that associates values to keys. This type is optimized for several

A string is series of characters, therefore, a character is the same as a byte. That is, there are exactly 256 different characters possible. This

Floating point numbers (also known as «floats», «doubles», or «real numbers») can be specified using any of the following syntaxes: <?php $a = 1.234; $b

An integer is a number of the set ? = {…, -2, -1, 0, 1, 2, …}. Syntax Integers can be specified in decimal (base

Four scalar types: boolean integer float (floating-point number, aka double) string Two compound types: array object And finally two special types: resource NULL This manual

This is the simplest type. A boolean expresses a truth value. It can be either TRUE or FALSE. Note: The boolean type was introduced in

PHP supports ‘C’, ‘C++’ and Unix shell-style (Perl style) comments. For example: <?php echo ‘This is a test’; // This is a one-line c++ style

When PHP parses a file, it looks for opening and closing tags, which tell PHP to start and stop interpreting the code between them. Parsing