None of the examples here worked for me, so I came up with a solution using eval() (read about the risks here, but if you don't use user data, it shouldn't be much of an issue). The if-clause in the set-method allows you to push your item onto a new or existing array at that location ($location[] = $item).
class ArrayDot {
public static function get(array &$array, string $path, string $delimiter = '.') {
return eval("return ".self::getLocationCode($array, $path, $delimiter).";");
}
public static function set(array &$array, string $path, $item, string $delimiter = '.') : void {
//if the last character is a delimiter, allow pushing onto a new or existing array
$add = substr($path, -1) == $delimiter ? '[]': '';
eval(self::getLocationCode($array, $path, $delimiter).$add." = \$item;");
}
public static function unset(array &$array, $path, string $delimiter = '.') : void {
if (is_array($path)) {
foreach($path as $part) {
self::unset($array, $part, $delimiter);
}
}
else {
eval('unset('.self::getLocationCode($array, $path, $delimiter).');');
}
}
public static function isSet(array &$array, $path, string $delimiter = '.') : bool {
if (is_array($path)) {
foreach($path as $part) {
if (!self::isSet($array, $part, $delimiter)) {
return false;
}
}
return true;
}
return eval("return isset(".self::getLocationCode($array, $path, $delimiter).");");
}
private static function getLocationCode(array &$array, string $path, string $delimiter) : string {
$path = rtrim($path, $delimiter); //Trim trailing delimiters
$escapedPathParts = array_map(function ($s) { return str_replace('\'', '\\\'', $s); }, explode($delimiter, $path));
return "\$array['".implode("']['", $escapedPathParts)."']";
}
}
Example usage:
echo '<pre>';
$array = [];
ArrayDot::set($array, 'one.two.three.', 'one.two.three.');
ArrayDot::set($array, 'one.two.three.four.', 'one.two.three.four.');
ArrayDot::set($array, 'one.two.three.four.', 'one.two.three.four. again');
ArrayDot::set($array, 'one.two.three.five.', 'one.two.three.five.');
ArrayDot::set($array, 'one.two.three.direct set', 'one.two.three.direct set');
print_r($array);
echo "\n";
echo "one.two.three.direct set: ".print_r(ArrayDot::get($array, 'one.two.three.direct set'), true)."\n";
echo "one.two.three.four: ".print_r(ArrayDot::get($array, 'one.two.three.four'), true)."\n";
Output:
Array
(
[one] => Array
(
[two] => Array
(
[three] => Array
(
[0] => one.two.three.
[four] => Array
(
[0] => one.two.three.four.
[1] => one.two.three.four. again
)
[five] => Array
(
[0] => one.two.three.five.
)
[direct set] => one.two.three.direct set
)
)
)
)
one.two.three.direct set: one.two.three.direct set
one.two.three.four: Array
(
[0] => one.two.three.four.
[1] => one.two.three.four. again
)
