IF語句未PHP

Question

if ($fname <> "" and $lname <> "" and $theemail <> "" and $empid <> "" and $doh <> "" and $ydept <> "#") { 
    if ($percentage >= 85) { 
     mail ($myEmail, $mailSubject, $msgBody, $header); 
     mail ($userEmail, $sentMailSubject, $sentMailBody, $sentHeader); 
     $filename = "output_annualexam.txt"; #Must CHMOD to 666, set folder to 777 
     $text = "\n" . str_pad($fname, 25) . "" . str_pad($lname, 25) . "" . str_pad($empID, 15) . "" . str_pad($doh, 15) . "" . str_pad($tdate, 20) . "" . str_pad($ydept, 44) . "" . str_pad($percentage, 0) . "%"; 

     $fp = fopen ($filename, "a"); # a = append to the file. w = write to the file (create new if doesn't exist) 
     if ($fp) { 
      fwrite ($fp, $text); 
      fclose ($fp); 
      #echo ("File written"); 
     } 
     else { 
      #echo ("File was not written"); 
     } 
     header ("Location: congrats.php?fname=$fname&type=$type"); 
    } 
    else { 
     header ("Location: nopass.php?percent=$percentage&type=$type"); 
    } 
} 
else { 
    header ("Location: tryagain.php?type=$type"); 
} 

檢查所有條件當$ ydept ==「＃」這意味着用戶沒有從選擇的選項，這將使IF語句失敗，這應該自動把用戶的任何部門到tryagain.php頁面，而是將它們帶到nopass.php頁面。所以它失敗了。

我應該嘗試& &，而不是和？但我認爲它不應該有所作爲。

Answer 1

是的，你應該使用&&不AND。

因爲我沒有足夠的說服力的解釋了吧，這裏有關於它的好帖子，感謝評論員）

'AND' vs '&&' as operator