问下:
preg_match('/\.([a-zA-Z]+?)$/', $_FILES['file']['name'], $matches);
echo $matches[1];
出错,提示:Notice: Undefined offset: 1 怎么解决?
$matches[1]这样有错么?
preg_match('/\.([a-zA-Z]+?)$/', $_FILES['file']['name'], $matches);
echo $matches[1];
出错,提示:Notice: Undefined offset: 1 怎么解决?
$matches[1]这样有错么?
echo $matches[1];
} else {
echo "找不到符合的";
}
echo(preg_match('/\.([a-zA-Z]+?)$/', $_FILES['file']['name'], $matches) ? "{$matches[1]}" : "找不到符合的");