Title: functions.php – am I doing it right?
Last modified: August 21, 2016
---
# functions.php – am I doing it right?
* [loudnotes](https://wordpress.org/support/users/loudnotes/)
* (@loudnotes)
* [12 years, 4 months ago](https://wordpress.org/support/topic/functionsphp-am-i-doing-it-right/)
* I am a PHP novice and have managed to do some basic customization using functions.
php without breaking anything, but I feel like I’m missing something. Would someone
be so kind as to tell me if there is a better way to approach this situation
so I can better understand how to apply it to other filters?
* I wanted to change the 404 page header from “Ooops” to “Oops”. The following
function in functions.php of my child theme:
* > ```
> add_filter('tc_404_header_content', 'tc_404_new');
> function tc_404_new(){
> echo '';
> }
> ```
>
* correctly replaces the below text generated in class-content-headings.php. I
have archive icons disabled.
* > ‘if ( is_404() ) {
> $header_class = ‘entry-header’; $content = sprintf(‘ class=”entry-title %1$s”>%2$s
’, apply_filters( ‘tc_archive_icon’, ” ),
> apply_filters( ‘tc_404_title’ , __( ‘Ooops, page not found’ , ‘customizr’ )));
> $content = apply_filters( ‘tc_404_header_content’, $content ); }’
* The reason I think I did something wrong is I had to manually type oout the HTML
code for the header tags and
featurette-divider tag, which were previously
automatically generated. I think maybe I don’t fully understand the role of the
second parameter in apply_filters. What does `,'customizr')` mean in this context?
Is it a defined variable somewhere?
* Is there another, better way to make this sort of change in functions.php?
* Thanks for any insights!
Viewing 3 replies - 1 through 3 (of 3 total)
* [rdellconsulting](https://wordpress.org/support/users/rdellconsulting/)
* (@rdellconsulting)
* [12 years, 4 months ago](https://wordpress.org/support/topic/functionsphp-am-i-doing-it-right/#post-4469397)
* Try adding this to your child theme functions.php:
* ```
add_filter('tc_archives_headings', 'rdc_archives_headings');
function rdc_archives_headings($output) {
return preg_replace('|Ooops|', 'Oops', $output);
}
```
* Thread Starter [loudnotes](https://wordpress.org/support/users/loudnotes/)
* (@loudnotes)
* [12 years, 4 months ago](https://wordpress.org/support/topic/functionsphp-am-i-doing-it-right/#post-4469438)
* Neat trick, thanks! I knew there had to be a better way.
* For future reference though, if I’m replacing more than just a letter, what is
the role of ‘customizr’ in assigning formatting? How would I call tc_404_title
or tc_archive_icon or other functions from within functions.php?
* [ElectricFeet](https://wordpress.org/support/users/electricfeet/)
* (@electricfeet)
* [12 years, 4 months ago](https://wordpress.org/support/topic/functionsphp-am-i-doing-it-right/#post-4469453)
* The best way is to continue reading the Customizr site and this forum, to get
confident with Customizr and php. In the meantime, use the [Say What?](http://wordpress.org/plugins/say-what/)
plugin to change any string to any other (tip: the “domain” in the Say What?
settings is `customizr`).
Viewing 3 replies - 1 through 3 (of 3 total)
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## Tags
* [child theme](https://wordpress.org/support/topic-tag/child-theme/)
* 3 replies
* 3 participants
* Last reply from: [ElectricFeet](https://wordpress.org/support/users/electricfeet/)
* Last activity: [12 years, 4 months ago](https://wordpress.org/support/topic/functionsphp-am-i-doing-it-right/#post-4469453)
* Status: not resolved