PHP Cheat Sheet

Merge two arrays, retain unique values

Append values from second array.
Do not care about keys.

<?php
$array1 = [
    0 => 'apple',
    1 => 'orange',
    2 => 'pear',
];

$array2 = [
    0 => 'melon',
    1 => 'orange',
    2 => 'banana',
];

$result = array_keys(
    array_flip($array1) + array_flip($array2)
);
?>

Result:
[
  [0] => "apple",
  [1] => "orange",
  [2] => "pear",
  [3] => "melon",
  [4] => "banana",
}

Apache Config Options / .htaccess

error_reporting calculator:

• http://www.bx.com.au/tools/ultimate-php-error-reporting-wizard
• https://maximivanov.github.io/php-error-reporting-calculator/

Bash / Packages / Version

Get list of installed php packages:

• dpkg --get-selections | grep ^php | cut -f 1 | tr '\n' ' '
• dpkg --get-selections | grep ^php | cut -f 1 | tr '\n' ' ' | sed "s/7.0//g" | sed "s/php/php7.4/g"