- preg_replace_callback: documentation ( source)
- var_export: documentation ( source)
- ucfirst: documentation ( source)
<?php
$strings = [
"test string",
"lado lomidze needs a solution",
"I made some research and found 'good' answers here; they really helped me."
]; // if not already all lowercase, use strtolower()
var_export(preg_replace_callback('/\w.?/', function ($m) { return ucfirst($m[0]); }, $strings));