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How to update a single library with Composer?
...ust want to update a few packages and not all, you can list them as such:
php composer.phar update vendor/package:2.* vendor/package2:dev-master
You can also use wildcards to update a bunch of packages at once:
php composer.phar update vendor/*
--prefer-source: Install packages from source wh...
Checking if array is multidimensional or not?
... least the implicit loop is better than the straight for()):
$ more multi.php
<?php
$a = array(1 => 'a',2 => 'b',3 => array(1,2,3));
$b = array(1 => 'a',2 => 'b');
$c = array(1 => 'a',2 => 'b','foo' => array(1,array(2)));
function is_multi($a) {
$rv = array_filter($...
How to insert an item at the beginning of an array in PHP?
...ssociative array or need to preserve keys then see the user examples here: php.net/manual/en/function.array-unshift.php there are a couple good examples of how to accomplish this!
– Vallier
Aug 22 '19 at 21:59
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When would anyone use a union? Is it a remnant from the C-only days?
...te a heterogeneous collection of unrelated types which are not dynamically allocated (perhaps they are in-place constructed in a map, or members of an array).
And now, an example, with a UML class diagram:
The situation in plain English: an object of class A can have objects of any class among ...
How can I get the current page name in WordPress?
What PHP code can be used to retrieve the current page name in a WordPress theme?
19 Answers
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How to get an array of specific “key” in multidimensional array without looping
...
Since php 5.5, you can use array_column:
$ids = array_column($users, 'id');
This is the preferred option on any modern project. However, if you must support php > 5.5, the following alternatives exist:
Since php 5.3, you can...
When to use static vs instantiated classes
PHP is my first programming language. I can't quite wrap my head around when to use static classes vs instantiated objects.
...
Getting the names of all files in a directory with PHP
... How can we get all files within list of extensions? E.g. if we want all .php and .js files ?
– Nis
Apr 30 '14 at 4:33
3
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Best way to give a variable a default value (simulate Perl ||, ||= )
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In PHP 7 we finally have a way to do this elegantly. It is called the Null coalescing operator. You can use it like this:
$name = $_GET['name'] ?? 'john doe';
This is equivalent to
$name = isset($_GET['name']) ? $_GET['name'...
Is there a standard for storing normalized phone numbers in a database?
...at is whatever the user entered exactly, and then have a parsing algorithm tokenize it when needed, rather than storing the tokenized form in the database.
– Adam Davis
Jul 28 '09 at 16:56
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