Small example of a default method specified by the php function _ php instance

This article introduces how to specify the default value of a function in php programming. We will share two examples for your reference in this section:
Specify the default value for the php function.
In php programming, set the default value for the custom function. When you call this function, if you do not specify a value for the parameter, the parameter will be replaced by the default value.
Example 1,

The Code is as follows:

Php function specifies the default value -www.php.net


Function printMe ($ param = NULL)
{
Print $ param;
}
PrintMe ("This is test ");
PrintMe ();
?>

Output result:
This is test
Example 2: use the default values of php function parameters. Set and use the default values in php function parameters.
Code:

The Code is as follows:

Default Value of php function parameters-www.php.net


Function textonweb ($ content, $ fontsize = 3 ){
Echo "$ content ";
}
Textonweb ("
", 7 );
Textonweb ("AA.
");
Textonweb ("AAA.
");
Textonweb ("AAAA!
");
?>