<?php
function flatten($arr)
{
$result = [];
foreach ($arr as $key => $value) {
if (is_array($value)) {
foreach ($this->flatten($value) as $subKey => $scalar) {
$result[$key . ':' . $subKey] = $scalar;
}
} else if (is_scalar($value)) {
$result[$key] = $value;
}
}
return $result;
}
var_dump(['foo' => 123, 'bar' => 456]);
var_dump(['foo' => ['bar' => 123, 'baz' => 456]]);
- Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.31, 7.1.0 - 7.1.23, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
- array(2) {
["foo"]=>
int(123)
["bar"]=>
int(456)
}
array(1) {
["foo"]=>
array(2) {
["bar"]=>
int(123)
["baz"]=>
int(456)
}
}
- Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
- Parse error: syntax error, unexpected '[' in /in/Y9rWC on line 5
Process exited with code 255. - Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
- Parse error: parse error, unexpected '[' in /in/Y9rWC on line 5
Process exited with code 255. - Output for 4.3.2 - 4.3.4
- Parse error: parse error in /in/Y9rWC on line 5
Process exited with code 255.
preferences:
263.87 ms | 401 KiB | 417 Q