A brief analysis of the call user func () function in PHP and how to invoke a custom function using called user func, Callfunc
Ucenter source code has a function Call_user_func, began to think that it is a function of their own, the results can not
1. The concept of arrays
An array is a named range that is used to store a series of variable values.
Each array element has an associated index (also a keyword) that can be used to access elements.
PHP allows you to use numbers or strings evenly
Call_user_func () and Call_user_func_array (), by passing in a string function, can invoke a custom function and support references, allowing the user to invoke a custom function and pass in a certain parameter:1.Mixed Call_user_func (callable
basic functions of array manipulationThe key name and value of the arrayArray_values ($arr); Gets the value of the array Array_keys ($arr), gets the key name of the array array_flip ($arr), and the values in the array are exchanged with the key
Basic functions of array manipulationThe key name and value of the arrayArray_values ($arr); Get the value of an arrayArray_keys ($arr); Gets the key name of the arrayArray_flip ($arr); the values in the array are exchanged with the key names (if
Ucenter source code has a function Call_user_func, beginning to think it is a function of their own definition, the results are nowhere to be found. It was later learned that Call_user_func is a built-in function of PHP that allows the user to
Php array required
Foreach ($ prices as $ key => $ value)
Echo $ key. '=>'. $ value .'';
The following code uses the each () structure to print the content of the $ prices array:
While ($
Analyze the calluserfunc () function in PHP and how to use calluserfunc to call the custom function callfunc. Analysis on the calluserfunc () function in PHP and how to use calluserfunc to call a user-defined function. in the callfuncUCenter source
Php basics (3) --- PHP function basics, php --- phpPhp basics (3)-Today I will share with you the basics of PHP functions. With the first two chapters, I think you have a basic understanding of PHP. If you want to review the previous two chapters,
Getting Started with PHP Basics (ii.)--Function basicsUnderstandafter a quick introduction to PHP Basics (i),let's share the basic function of PHP. This part is mainly about: declaration and use of functions, scope of variables in PHP, static
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