<?php

$serialized = serialize(
	[
		'one'   => 1,
		'two'   => 'nice',
		'three' => 'will be damaged'
	]
);

var_dump($serialized); // a:3:{s:3:"one";i:1;s:3:"two";s:4:"nice";s:5:"three";s:15:"will be damaged";}

var_dump(unserialize('a:3:{s:3:"one";i:1;s:3:"two";s:4:"nice";s:5:"tee";s:15:"will be damaged";}')); // please note 'tee'

var_dump(unserialize('a:3:{s:3:"one";i:1;s:3:"two";s:4:"nice";s:5:"three";s:')); // serialized string is truncated