php – Page 63 – Türker Yıldırım

wc_get_orders is the query you should be using

NoteJune 14, 20162 min read

Orders are posts, so WP_Query works and every example on the internet uses it — with a post_type of shop_order, a meta query for the customer, and a…

Null coalescing chains, and where null still gets through

NoteJune 14, 20161 min read

?? chains left to right and returns the first operand that is not null, which reads like a safe navigation operator and is not one. It only guards…

Group use declarations shorten the import block

NoteJune 10, 20161 min read

A file importing six classes from the same namespace repeats the namespace six times, which is noise that grows with the depth of the tree. It is purely…

The N+1 queries you did not write

Deep diveJune 3, 20168 min read

1,400 queries on a page showing 40 rows. Eager loading, the difference between with() and load(), and the accessor that no eager load can fix.

wp_die is the wrong way to fail an AJAX request

NoteMay 28, 20161 min read

wp_die() in an AJAX handler sends an HTML error page with a 200 status, so the JavaScript sees a successful response containing markup and fails while parsing it.…

Query scopes are where the repeated where() clauses go

NoteMay 27, 20162 min read

The same three conditions appear in nine controllers, and when the definition of “active” changes there are nine places to edit and one that gets missed. The naming…

chunkById is the safe one when the loop mutates rows

NoteMay 27, 20162 min read

chunk() paginates with OFFSET, so if the loop body changes whether a row still matches the query, the offset for the next page has shifted and rows get…

Moving catalogue search off MySQL and onto Elasticsearch

Deep diveMay 18, 201615 min read

LIKE cannot use an index and everyone knows it. The mapping, the analyzers that decide what matching means, the indexing pipeline, and the drift it introduces.

Order status transitions have hooks of their own

NoteMay 5, 20162 min read

Hooking save_post to react to an order being paid works occasionally and misses every transition made from a payment gateway callback, the REST API or WP-CLI. The status…

Composer 1.0 platform config pins the PHP it resolves against

NoteApril 27, 20161 min read

Composer resolves dependencies against the PHP running it, so a developer on 7.0 and a server on 5.6 get different — and both correct — lock files. The…