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這是我的代碼。調試事情的經過,獨自呼應的形式工作和PHP腳本單獨工作,但是遇到了麻煩把他們當兩者一起如果不是會員,則顯示錶格
<?php
$check = $mysqli->query("SELECT is_member FROM users WHERE username = '$username'");
$isMember = $check->fetch_assoc();
if ($isMember == 0){
echo '<form action="https://www.paypal.com/cgi-bin/webscr" method="post" target="_top">
<input type="hidden" name="cmd" value="_s-xclick">
<input type="hidden" name="custom" value="$username">
<input type="hidden" name="hosted_button_id" value="H4K679J6Y5T7C">
<input type="image" src="https://www.paypalobjects.com/en_US/GB/i/btn/btn_subscribeCC_LG.gif" border="0" name="submit" alt="PayPal – The safer, easier way to pay online.">
<img alt="" border="0" src="https://www.paypalobjects.com/en_GB/i/scr/pixel.gif" width="1" height="1">
</form>';
}
?>
@Fred -ii-你能發現任何明顯的錯誤? –