WP List Utils wp_list_pluck wp_list_filter wp_list_sort wp_parse_list wp_parse_id_list wp_parse_slug_list wp_array_slice_assoc wp_filter_object_list wp_extract_urls

wp-list-utils.php

<?php

$people = [
	[
		'name'       => 'John Doe',
		'email'      => '[email protected]',
		'occupation' => 'Software Developer',
	],
	[
		'name'       => 'Jane Doe',
		'email'      => '[email protected]',
		'occupation' => 'Designer',
	],
	[
		'name'       => 'Johnny Doe',
		'email'      => '[email protected]',
		'occupation' => 'Tester',
	],
];

$posts = get_posts();

$post_titles = wp_list_pluck( $posts, 'post_title' );

$post_titles = wp_list_pluck( $posts, 'post_title', 'ID' );

$filtered = wp_list_filter( $posts, [
	'ID' => 10,
] );

$filtered = wp_list_filter( $posts, [
	'post_author'    => 1,
	'comment_status' => 'open',
] );

$filtered = wp_list_filter( $people, [
	'name'       => 'Johnny Doe',
	'occupation' => 'Software Developer'
], 'or' );


$sorted = wp_list_sort( $posts, 'post_title' );

$sorted = wp_list_sort( $posts, 'post_title', 'desc' );

$sorted = wp_list_sort( $people, 'occupation', 'desc', true );

$sorted = wp_list_sort( $people, [
	'occupation' => 'asc', // order by occupation using asc
	'name'       => 'desc' // order by name using desc
], null, true );

$list = wp_parse_list( 'One, Two, Three 4 50' );

$list = wp_parse_id_list( [ 1, 2, '3', '2' ] );

$list = wp_parse_id_list( '1, 2, 3 2 ' );

$list = wp_parse_slug_list( [ 'slug1', ' slug2', 'slug 1 ', 'slug2' ] );

$list = wp_parse_slug_list( 'slug1 slug2, slug 1 slug2' );

$slice = [];

foreach ( $people as $person ) {
	$slice[] = wp_array_slice_assoc( $person, [ 'name', 'email' ] );
}

$filtered = wp_filter_object_list(
	$posts,
	[ 'post_date' => '2019-05-05 03:15:32', 'comment_status' => 'open' ],
	'or', // match any field
	'post_title' // only return post_title
);

$filtered = wp_filter_object_list(
	$posts,
	[ 'post_date' => '2019-05-05 03:15:32', 'comment_status' => 'open' ]
);

$urls = wp_extract_urls( $posts[0]->post_content );

if ( wp_is_numeric_array( [ 'a', 'b' ] ) ) {
	// It's a numeric-indexed array.
}