void is a return-only type declaration indicating the function does not return a value, but the function may still terminate. Therefore, it cannot be part of a ...
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Types ¶. Table of Contents ¶. Introduction · Type System · NULL · Booleans · Integers · Floating point numbers · Strings · Numeric strings · Arrays ...
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Type declarations ¶. Type declarations can be added to function arguments, return values, and, as of PHP 7.4.0, class properties. They ensure that the value ...
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PHP is a dynamically typed language, which means that by default there is no need to specify the type of a variable, as this will be determined at runtime.
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When a string is specified in double quotes or with heredoc, variables are parsed within it. There are two types of syntax: a simple one and a complex one. The ...
Resources are created and used by special functions. See the appendix for a listing of all these functions and the corresponding resource types. See also the ...
The null type is PHP's unit type, i.e. it has only one value: null . Undefined, and unset() variables will resolve to the value null . Syntax ¶. There is only ...
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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 different uses; it can be treated ...
PHP Manual ¶ · Basic syntax · Types · Variables · Constants · Expressions · Operators · Control Structures · Functions ...
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Language Reference ¶ · Basic syntax · PHP tags · Escaping from HTML · Types · Introduction · Type System · Variables · Basics · Predefined Variables · Constants.