<?php
echo '<pre>';
$id = 1035; // Searching ID
$myObj = array();
 
$a = [
	'id'=> 291,    
	'children' => [
		[
			'id'        => 1034,
			'children'  => [
				[
					'id'      => 111,
					'name'    => 'ABC',
					'figure'  => '6 digits',  
					'children'=> []  
				],
				[
					'id'        => 1035,
					'lft'       => 'LEFT',
					'children'  => [
						[
							'id'        => 1036,
							'children'  => [
								[
									'id'      => 222,
									'someKey' => 'some value',
									'children'=> []  
								]
							]
						],
						[
							'id'      => 333,
							'someKey' => 'some value',
							'children'=> []  
						]
					],
				]
			],
		],
		[
			'id'        => 1024,
			'title'     => 'ABC',    
			'children'  => [
 
			],
		]
	]
];
 
function findObject($id, $obj) {
	global $myObj;
	// This is an object.
	if (isset($obj["id"])) {
		echo "Checking {$obj["id"]}<br />";
		// Check the id to what we need.
		if ($obj["id"] == $id) {
			// Yay! We found it. Return the object.
			echo "<strong>Yay we found {$obj["id"]}</strong><br />";
			$myObj = $obj;
			echo "<strong>Need to find a way to break out!</strong><br />";
		}
		else {
			echo "Checking children of {$obj["id"]}<br />";
			// See if it has any children
			if (isset($obj["children"]) && count($obj["children"]) > 0) {
				echo "There are children for {$obj["id"]}<br />";
				foreach ($obj["children"] as $child) {
					findObject($id, $child);
				}	
			}
		}
	}
}
 
findObject($id, $a);
if (isset($myObj) && !empty($myObj)) {
	echo "<br /><strong>Found it!</strong><br />";
	print_r($myObj);
} else
	echo "Sorry, can't find the ID!";
 
echo '</pre>';

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