<?php
$a = [
'a' => 'some value',
'b' => 'some value',
'c' => 'some value'
];
$b = [
'a' => 'another value',
'd' => 'another value',
'e' => 'another value',
'f' => 'another value'
];
$c = [
'b' => 'some more value',
'x' => 'some more value',
'y' => 'some more value',
'z' => 'some more value'
];
$defaults = array_fill_keys(array_keys($a + $b + $c), '');
var_export(
array_map(fn($row) => array_merge($defaults, $row), [$a, $b, $c])
);
- Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
- array (
0 =>
array (
'a' => 'some value',
'b' => 'some value',
'c' => 'some value',
'd' => '',
'e' => '',
'f' => '',
'x' => '',
'y' => '',
'z' => '',
),
1 =>
array (
'a' => 'another value',
'b' => '',
'c' => '',
'd' => 'another value',
'e' => 'another value',
'f' => 'another value',
'x' => '',
'y' => '',
'z' => '',
),
2 =>
array (
'a' => '',
'b' => 'some more value',
'c' => '',
'd' => '',
'e' => '',
'f' => '',
'x' => 'some more value',
'y' => 'some more value',
'z' => 'some more value',
),
)
preferences:
100.03 ms | 408 KiB | 5 Q