Iterating through complex json array - php

Question

I'm recieving the following multidimensional array via an ajax post:
array(1) {
["result"] => array(3) {
[0] => array(2) {
[0] => string(1)
"0" [1] => array(2) {
["id"] => string(5)
"1§10" ["children"] => array(2) {
[0] => array(1) {
["id"] => string(6)
"1§3$0"
} [1] => array(1) {
["id"] => string(6)
"1§1$0"
}
}
}
} [1] => array(2) {
[0] => string(1)
"1" [1] => array(1) {
["id"] => string(5)
"3§20"
}
} [2] => array(2) {
[0] => string(1)
"2" [1] => array(2) {
["id"] => string(5)
"2§30" ["children"] => array(1) {
[0] => array(1) {
["id"] => string(6)
"2§2$0"
}
}
}
}
}
}
Is there a way to return only the strings one by one with php? The depth of the of the string in the array does not matter what so ever since i will only parse and explode the id strings.

Answer 1

You can implement simple recorsice function as:
function printString($arg) {
if (is_string($arg))
echo $arg . PHP_EOL;
else (is_array($arg)) {
foreach($arg as $e)
printString($e);
}
}
Or use array_walk_recursive as:
function printStr($item, $key) {
echo $item . PHP_EOL;
}
array_walk_recursive($arr, 'printStr');
If you only need the "id" string do:
function printId($item, $key) { if ($key == "id") echo $item . PHP_EOL; }
array_walk_recursive($arr, 'printId');
Reference: is_string, is_array, array-walk-recursive