BIWEB开源PHP WMS系统创始人ArthurXF肖飞的blog

<?php

echo 'PHP VERSION:'.PHP_VERSION;
echo '<br />';

$a = 'abc';

$example = 1;

if($example == 1) {

   unset($a[0]); // Fatal error: Cannot unset string offsets in

} elseif($example == 2) {

   $b = $a[0][0]; // Fatal error: Cannot use string offset as an array in …
}

?>