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WordPress WordPress Hooks - Actions and Filters Filter Functions in WordPress Real World Examples of WordPress Filters

Nathaniel Miller
Nathaniel Miller
8,802 Points
Posted by Nathaniel Miller
Nathaniel Miller
8,802 Points

There's 3 parameters, $title, $sep, and $seplocation. Why does he say there's only 2 and go on to ignore $seplocation?

When adding his wp_title filter the instructor poses the question "How do we know there are two parameters?". So he does a search for 'apply filter...' and comes with up with a line that shows three parameters. Then he says there are two and goes onto ignore the last one. Why is that?

2 Answers

Kwaw Buaku
Kwaw Buaku
1,800 Points
Kwaw Buaku
Kwaw Buaku
1,800 Points

When you make the search it positions you at this line of code:

$title = apply_filters( 'wp_title', $title, $sep, $seplocation );

But you are only at the position of the function, going up the function you would notice that there are default values:

function wp_title( $sep = '»', $display = true, $seplocation = '' ) {
  ...
}

The $seplocation is blank at the default section.

Glenré Charl Labuschagné
Glenré Charl Labuschagné
23,204 Points
Glenré Charl Labuschagné
Glenré Charl Labuschagné
23,204 Points

In short he is only setting 2 required parameters for the function custom_wp_title( $title, $sep) and ignoring (leaving) the default $seplocation parameter.