<?php
//the original array
$a = array(
'a23' => 'abcdefg
hij'
);
//make it serial
$s = serialize($a);
//just to see the serial string
var_dump($s);
//the serialized array
$s1 = 'a:1:{s:3:"a23";s:11:"abcdefg
hij";}';
//the same with linux line end character
$s2 = "a:1:{s:3:\"a23\";s:11:\"abcdefg\12hij\";}";
//the same with windows line end character, same I had in my PEAR files
$s3 = "a:1:{s:3:\"a23\";s:12:\"abcdefg\15\12hij\";}";
//turn it back to an array
$a1 = unserialize($s1); // ok
$a2 = unserialize($s2); // ok
$a3 = unserialize($s3); // not ok
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
string(35) "a:1:{s:3:"a23";s:11:"abcdefg
hij";}"
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/u03Ek on line 22
Process exited with code 255.