Changing argument values : Parameters « Functions « PHP

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PHP » Functions » Parameters 
Changing argument values
 
<?
// One optional argument: it must be last
function page_header5($color, $title, $header = 'Welcome') {
    print '<html><head><title>Welcome to ' . $title . '</title></head>';
    print '<body bgcolor="#' . $color . '">';
    print "<h1>$header</h1>";
}
// Acceptable ways to call this function:
page_header5('66cc99','my wonderful page'); // uses default $header
page_header5('66cc99','my wonderful page','This page is great!'); // no defaults
?>
  
  
Related examples in the same category
1. Functions and References
2. A function that takes a reference for an argument
3. Declaring a Function with Arguments
4. Function with default parameters
5. Passing Variables as a Reference to the Argument of a Function
6. Passing an Argument to a Function by Value
7. Using a Function Call to Pass an Argument to a Function by Reference
8. Declaring a Function That Requires Arguments
9. Function with an Optional Argument
10. A Function with an Optional Argument
11. Accessing Function Parameters
12. All optional arguments
13. Capturing a return value
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
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