[Support request] Adding PHP in funtions file of Child Theme

[Matias]

Hi, Im tryig to add this code to make a custom 404 page in funtions.php file of a GP child Theme:

/* CUSTOM 404 PAGE */
add_filter( ‘generate_404_title’,’generate_custom_404_title’ );
function generate_custom_404_title()
{
return ‘Custom 404 title’;
}
add_filter( ‘generate_404_text’,’generate_custom_404_text’ );
function generate_custom_404_text()
{
return ‘Custom 404 text’;
}

But I always get a WordPress Error when I try to load the web
How can add code un funtions.php file without problems?
thanks

[David]

Hi there,

can’t see a problem with that code.
What is the error ?
And can you try using the Code Snippets plugin to test, if that errors then there is something conflicting.

[Matias]

Thanks for your answer.
I rather not use more plugins in my wordpress site.
I just add the code in funtions file and when I try to load the website I get a WordPress Error.
Blank Page with that error

[David]

You don’t need to keep the plugin installed – it would be good if you can test the code using the plugin – if the error doesn’t happen then there is something else causing the issue. Just trying to narrow down where the issue could be

[Matias]

Hi. I have used Code Snippets Pluging to add de PHP code to Functions file without problems but I dont see any change in 404 error page.

Always that I add some functions code to the file of my GP child theme I get the same error

[David]

Do you have any other functions in your child theme?
If so can you try removing the others to see if there is a conflict.

[Matias]

I have the generatepress folder with all files and a generatepress_child folder with 3 files:
functions.php, screeshot.jpg and style.css

The functions.php file content is:

<?php
/**
* GeneratePress child theme functions and definitions.
*
* Add your custom PHP in this file. 
* Only edit this file if you have direct access to it on your server (to fix errors if they happen).
*/
function generatepress_child_enqueue_scripts() {
if ( is_rtl() ) {
wp_enqueue_style( 'generatepress-rtl', trailingslashit( get_template_directory_uri() ) . 'rtl.css' );
	}
}
add_action( 'wp_enqueue_scripts', 'generatepress_child_enqueue_scripts', 100 );

All works fine but if I add some php code after the last line the error appears.

[Tom]

Hi there,

Can you try this as your functions.php file?:

<?php
/**
* GeneratePress child theme functions and definitions.
*
* Add your custom PHP in this file. 
* Only edit this file if you have direct access to it on your server (to fix errors if they happen).
*/

add_action( 'wp_enqueue_scripts', 'generatepress_child_enqueue_scripts', 100 );
function generatepress_child_enqueue_scripts() {
    if ( is_rtl() ) {
        wp_enqueue_style( 'generatepress-rtl', trailingslashit( get_template_directory_uri() ) . 'rtl.css' );
    }
}

add_filter( 'generate_404_title', function() {
    return 'Custom 404 title';
} );

add_filter( 'generate_404_text', function() {
    return 'Custom 404 text';
} );

Let me know 🙂

[Matias]

Hi, I have added this code to my functions.php file in GP Child Theme with the same result

Loading a webpage or opening the WP admin Panel the error reappears.

[Matias]

Please any help?

I have this functions file in child theme:

<?php
/**
* GeneratePress child theme functions and definitions.
*
* Add your custom PHP in this file. 

 * Only edit this file if you have direct access to it on your server (to fix errors if they happen).
*/
function generatepress_child_enqueue_scripts() {

	if ( is_rtl() ) {

		wp_enqueue_style( 'generatepress-rtl', trailingslashit( get_template_directory_uri() ) . 'rtl.css' );

	}

}

add_action( 'wp_enqueue_scripts', 'generatepress_child_enqueue_scripts', 100 );

I add some php code like this:
`<?php

/**

* GeneratePress child theme functions and definitions.

*

* Add your custom PHP in this file.

* Only edit this file if you have direct access to it on your server (to fix errors if they happen).

*/

function generatepress_child_enqueue_scripts() {

if ( is_rtl() ) {

wp_enqueue_style( ‘generatepress-rtl’, trailingslashit( get_template_directory_uri() ) . ‘rtl.css’ );

}

}

add_action( ‘wp_enqueue_scripts’, ‘generatepress_child_enqueue_scripts’, 100 );

add_filter( ‘generate_google_font_display’, function() {
return ‘swap’;
} );`

And I get a WordPress tecnichal problem adviser. Check you mail to test…

Always the same error

[Tom]

What’s the specific error? It should give you some sort of hint at what’s going on.

[Matias]

You can see a imagen of the problem in this post:
Post

I open the functions.php of the child theme
I add after the last line a php code like this:

add_filter( ‘generate_google_font_display’, function() {
return ‘swap’;
} );

And when I reload my web site I get a WordPress > Error

The site is experiencing technical difficulties.

[Tom]

That’s not the specific error, though. You should receive an email with more details, which should have the specific error.

If not, you can check the error_log file on your server, which should have a specific error. It’s hard to debug without knowing what we’re looking for.

Alternatively, you can try the functions.php file in our child theme: https://docs.generatepress.com/article/using-child-theme/

Then you can add your functions one by one until it breaks.

[Matias]

The error email says:

An error of type E_PARSE occurred on line 1 of the file /home/tecnoped/public_html/tecnopeda.com/wp-content/themes/generatepress_child/functions.php. Error message: syntax error, unexpected ‘function’ (T_FUNCTION)

[Tom]

Can you try our child theme I linked to? Then just add your functions to it one by one – I’m thinking there might be some sort of funky character in yours.

[Author]

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