Functions and References : Parameters « Functions « PHP






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Functions and References


<?php
     $val1 = "";
     $val2 = "";
   
     function return_multi_value(&$value1, &$value2)
     {
          $value1 = "This is the first value";
          $value2 = "This is the second value";
     }
   
     return_multi_value($val1, $val2);
     print("$val1<br />$val2<br />");
?>








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1.A function that takes a reference for an argument
2.Declaring a Function with Arguments
3.Function with default parameters
4.Passing Variables as a Reference to the Argument of a Function
5.Passing an Argument to a Function by Value
6.Using a Function Call to Pass an Argument to a Function by Reference
7.Declaring a Function That Requires Arguments
8.Function with an Optional Argument
9.A Function with an Optional Argument
10.Accessing Function Parameters
11.All optional arguments
12.Capturing a return value
13.Changing argument values
14.Defining and Calling a two-argument function,
15.Function Arguments
16.Function with two parameters
17.Creating Functions That Take a Variable Number of Arguments
18.Creating a capitalize function with a default parameter $each
19.Default Parameters
20.Define whether a variable is passed by value or reference
21.Passing By Reference
22.Making arguments be passed by reference
23.Using Optional Parameters