User-defined functions ¶. A function may be defined using syntax such as the following: Example #1 Pseudo code to demonstrate function uses.
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User-defined functions · Function arguments · Returning values · Variable functions · Internal (built-in) functions · Anonymous functions · Arrow Functions · First ...
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A function may define default values for arguments using syntax similar to assigning a variable. The default is used only when the parameter is not specified; ...
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In PHP 5, value must be a scalar value (int, float, string, bool, or null ). In PHP 7, array values are also accepted. Warning. While it is possible to define ...
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PHP Manual ¶ · Basic syntax · Types · Variables · Constants · Expressions · Operators · Control Structures · Functions ...
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Checks whether a constant with the given constant_name is defined. This function works also with class constants and enum cases. Note: If you want to see if a ...
Function Reference ¶ · Affecting PHP's Behaviour · APCu — APC User Cache · Audio Formats Manipulation · OpenAL — OpenAL Audio Bindings · Authentication Services.
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Returns a multidimensional array containing a list of all defined functions, both built-in (internal) and user-defined. The internal functions will be ...
Function and Method listing ¶. List of all the functions and methods in the manual. a b c d e f g h i j k l m n o p q r s t u v w x y z _.
Checks the list of defined functions, both built-in (internal) and user-defined, for function . Parameters ¶. function. The function name, as a string. Return ...