<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha1/dist/css/bootstrap.min.css" rel="stylesheet"
        integrity="sha384-GLhlTQ8iRABdZLl6O3oVMWSktQOp6b7In1Zl3/Jr59b6EGGoI1aFkw7cmDA6j6gD" crossorigin="anonymous">
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.3.0/css/all.min.css"
        integrity="sha512-SzlrxWUlpfuzQ+pcUCosxcglQRNAq/DZjVsC0lE40xsADsfeQoEypE+enwcOiGjk/bSuGGKHEyjSoQ1zVisanQ=="
        crossorigin="anonymous" referrerpolicy="no-referrer" />
</head>
</html>
--TEST--
Test serializing and unserializing many duplicate strings
--FILE--
<?php

function main() {
	$arr = array();
	// Just more than 2 ** 16
	$n = (2 ** 16) + 100;
	for ($i = 0; $i < $n; $i++) {
		$s = "$i";
		$arr[] = $s;
		$arr[] = $s;
	}
	$unser = igbinary_unserialize(igbinary_serialize($arr));
	var_export($arr === $unser);
}
main();
--EXPECT--
true
