- var_dump: documentation ( source)
- strpos: documentation ( source)
- htmlentities: documentation ( source)
- trim: documentation ( source)
<?php
$var1 = 'teste/teste';
$request = htmlentities(trim($var1), ENT_COMPAT | ENT_HTML5, SYS_ENCODING);
var_dump($request);
var_dump(strpos($request, '/'));