<?php
$subusers = [" hey", " h i", " ", "wh@t"];
foreach ($subusers as $subuser) {
echo "Assess \"$subuser\":\t";
if (!strlen($subuser = trim($subuser))) {
echo "* Username not entered";
//} elseif (!preg_match('/^[\da-z]+$/i', $subuser)) {
} elseif (!ctype_alnum($subuser)) {
echo "* Username not alphanumeric";
}
echo "\n";
}
- Output for 5.6.38, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
- Assess " hey":
Assess " h i": * Username not alphanumeric
Assess " ": * Username not entered
Assess "wh@t": * Username not alphanumeric
preferences:
168.19 ms | 403 KiB | 197 Q