How to Create Optional Parameters in Custom PHP Functions?

Defining Optional Arguments in PHP

In the PHP documentation, optional parameters are enclosed in brackets. For instance, the date() function accepts two parameters: the format and an optional timestamp, which defaults to the current time if omitted.

So, how do you create optional parameters in your custom PHP functions?

Creating Optional Parameters

Similar to the documentation, you can specify optional parameters by assigning them default values using an equals sign (=) in the function definition.

For example:

<code class="php">function dosomething($var1, $var2, $var3 = 'somevalue'){
    // Rest of function here...
}</code>

In this example, $var3 is an optional variable with a default value of 'somevalue'. If you call the function without passing a value for $var3, it will assume the default value.

This technique allows for flexibility in function definitions, enabling you to specify both required and optional parameters based on your desired behavior.

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