<?php
var_dump($a); //output: array(1) { ["x"]=> string(3) "xex" }
echo PHP_EOL . "----" . PHP_EOL;
echo PHP_EOL . "----" . PHP_EOL;
var_dump($a); //output: array(1) { ["x"]=> string(3) "xéx" }
echo PHP_EOL . "----" . PHP_EOL;
PD9waHAKCiRhID0gYXJyYXkgKCd4Jz0+J3hleCcpOwp2YXJfZHVtcCgkYSk7IC8vb3V0cHV0OiBhcnJheSgxKSB7IFsieCJdPT4gc3RyaW5nKDMpICJ4ZXgiIH0KCmVjaG8gUEhQX0VPTCAuICItLS0tIiAuIFBIUF9FT0w7CgplY2hvIChqc29uX2VuY29kZSgkYSkpOyAvL291dHB1dDogeyJ4IjoieGV4In0KCmVjaG8gUEhQX0VPTCAuICItLS0tIiAuIFBIUF9FT0w7CgokYSA9IGFycmF5ICgneCc9Pid4w6l4Jyk7CnZhcl9kdW1wKCRhKTsgLy9vdXRwdXQ6IGFycmF5KDEpIHsgWyJ4Il09PiBzdHJpbmcoMykgInjDqXgiIH0KCmVjaG8gUEhQX0VPTCAuICItLS0tIiAuIFBIUF9FT0w7CgplY2hvIChqc29uX2VuY29kZSgkYSkpOyA=