Documenting: Debugging WordPress With Custom Log Files

New Day: Sat 13 Aug 2022 02:29:10 PM CDT

Alright, after trying and failing

This is not going to be specific to LocalWP–even though I’m using it for this–because this should work on the same PHP/WordPress installations.

After looking around I found this dope talk where the speaker discusses different uses for the console object. More than just console.log(). However, I won’t be outputting into the console I am trying to AVOID ‘endless’ console.log statements. So I think I’m going to write those console.log’s to a file and then include the timestamp inside that file.

I had stuff written out about debugging with log files but I can’t seem to find them so I’m going to just start off by writing to a file in php.

I do have experience in writing to a file with JavaScript in the JSON object. But I’m guessing php is going to be different and hopefully easier.

Okay, so I’m going to make a folder called sandbox in my public folder. The route would be /home/<username>/Local Sites/test-3/app/public

Okay so now that I got my sandbox, let’s watch YT vids to learn how to write to a file.

Okay watching this video.

I found this comment helpful:

@Emanuel Benetti

“My two cents for anyone interested:
file_put_contents can accept a third parameter “flag”. You can specify if you want the file to keep adding data instead of erasing it (like a log, a list, etc).

In the example of this video, it will be something like this: file_put_contents($file, $comment, FILE_APPEND);

For more info about file_put_contents() you can visit the php wiki and see the technical stuff as well as the examples.”

I am unsure if this is going to work with WordPress or I am going to have to do a different solution. But … it has worked in my sandbox.

This block of code will create a file and write to it, fairly unsophisticated.


$log = "log.txt";

if (file_exists($log)){
 $current = file_get_contents($log);
} else{
  $myfile = fopen($log, "w");

// Starting the writing process.
file_put_contents($log, "This is a statement");

Okay, so now …. I have to … add this into my project and to log console errors. Thus, successfully debugging server side code.

While I’m trying to do that, I noticed my LocalWP blueprints were gone. So I’m fishing that out, also I noticed LocalWP hasn’t published their path structure to access LocalWP’s blueprints folder so I have to figure out what path that is in.

I figured it out and took a screenshot… but it’s the end of the workday.

Logging out: Sat 13 Aug 2022 08:28:05 PM CDT

New Day: Mon 15 Aug 2022 01:27:05 PM CDT

Alright, now that I got that figured out now it’s time to put it in the right spotsss.

Alright, because this blog is mainly dedicated to WordPress I got the WordPress stuff working with this.

// Create text file. 

$log = plugin_dir_path( __FILE__ ) . '/errors-log.txt'; 
$open = fopen( $log, "a" ); 

if (file_exists($log)){
 $current = file_get_contents($log);
} else{
  $myfile = fopen($log, "w");

// Starting the writing process.
file_put_contents($log, "This is a statement");

Now, I am going to add the Append flag so my stuff doesn’t get written over.

Okay, the append flag worked. After it worked for testing I changed the content added to it to be “”.

New Day: Fri 19 Aug 2022 08:48:11 PM CDT

file_put_contents($log, $fields[ 'billing_postcode' ] ." == " . zipToState( 62711 ) . PHP_EOL, FILE_APPEND);

Run :e to refresh the test file.

Tidbit: You don’t have to reload the WooCommerce checkout form when you’re working with php

New Day: Wed 24 Aug 2022 04:30:00 PM CDT

The php function written in this stackoverflow answer could help to get more information for debugging.


One response to “Documenting: Debugging WordPress With Custom Log Files”

Leave a Reply