<?php

$array = [];

class Class1{}
class Class2{}
class Class3{}

$arrClass = [
	'Class1', 
	'Class2', 
	'Class3',
];

for($i = 0; $i < 5; $i++) {
	
	foreach($arrClass as $class){
		$array[] = new $class;
	}
}

print_r($array);