我是網(wǎng)絡(luò)開發(fā)的新手。我有以下index.php文件：<H1>Form validation with my SQL integration </H1><form action="index.php" method="post"> emailid = <input type="text" name="tv_name" size="30" maxlength="32"><br> password = <input type="password" name="tv_pass" size="30" maxlength="11"><br> Press to create a new account: <input type="submit" colspan="12" name="bt_register" value="Register!"><br> Press to get all: <input type="submit" colspan="12" name="bt_getall" value="GetAll entries"><br></form><?php $req_type= $_SERVER['REQUEST_METHOD']; $data_arr =[]; if($req_type=='GET' and isset($_GET["bt_register"]) ){ $data_arr = $_GET; } elseif ($req_type=='POST' and isset($_POST["bt_register"]) ){ $data_arr = $_POST; } else { die("wrong format response received<br>"); // We didn't handle the first run flaw correctly. // Thus this message will be shown even if btregister is not pressed } echo strip_tags(""); # Converting key-string pair to key-array pair # Finding k-v pairs for each data foreach($data_arr as $i=> $value){ echo "---- $i : $value <br>"; } #... insertion/deletion/updation/creation?><?php // I had to make a new one because old one would die at login press #---------------- reading our database ------------------------------------------ $req_type= $_SERVER['REQUEST_METHOD']; # Checking req type if($req_type=='GET' and isset($_GET["bt_getall"]) ){ echo "Get all req received via get"; } elseif ($req_type=='POST' and isset($_POST["bt_getall"]) ){ echo "Get all req received via post"; } else { die("no get all response received, dying now."); } echo "<br>";?>在表單中，我有兩個(gè)按鈕，bt_register和bt_getall。<?php ...?>對于每個(gè)按鈕的任務(wù)，我還有兩個(gè) PHP 腳本。該bt_register腳本包含向 MySQL 控制臺(tái)添加條目的所有代碼（為簡潔起見已刪除）。bt_getall應(yīng)該具有從 SQL 服務(wù)器獲取條目的所有代碼。按下時(shí)bt_register，第一個(gè)腳本成功運(yùn)行，然后運(yùn)行第二個(gè)腳本（這是錯(cuò)誤的，但可以理解的行為：我希望bt_register只運(yùn)行第一個(gè)腳本，但由于當(dāng)前的 php 文件有兩個(gè)腳本，它會(huì)同時(shí)運(yùn)行它們）。
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30秒到達(dá)戰(zhàn)場
TA貢獻(xiàn)1828條經(jīng)驗(yàn) 獲得超6個(gè)贊
die()不應(yīng)在您的網(wǎng)絡(luò)腳本中使用。有時(shí)在調(diào)試時(shí)作為臨時(shí)措施很有用，但在實(shí)時(shí)應(yīng)用程序中使用它可能會(huì)導(dǎo)致災(zāi)難。一個(gè)更好的選擇是使用異常，它可以被您的應(yīng)用程序或 PHP 本身捕獲。
if(/*this is not allowed*/) {
throw new \Exception('You are not allowed to do this!');
}
通常，您應(yīng)該將應(yīng)用程序設(shè)計(jì)為具有最少的此類意外情況。如果出現(xiàn)問題不是您的應(yīng)用程序的錯(cuò)，那么您的代碼不應(yīng)該拋出任何錯(cuò)誤或異常。編寫適當(dāng)?shù)尿?yàn)證并以這樣的方式構(gòu)建項(xiàng)目，以便當(dāng)用戶提供無效輸入時(shí)，他們會(huì)得到一個(gè)很好的錯(cuò)誤消息。
慕森卡
TA貢獻(xiàn)1806條經(jīng)驗(yàn) 獲得超8個(gè)贊
牢記您在問題中施加的條件，
我確實(shí)希望我的所有 PHP 腳本只保留在一個(gè)文件中，并且表單按鈕可以運(yùn)行
我會(huì)建議以下解決您的問題的方法
<H1>Form validation with my SQL integration </H1>
<form action="index.php" method="post">
emailid = <input type="text" name="tv_name" size="30" maxlength="32"><br>
password = <input type="password" name="tv_pass" size="30" maxlength="11"><br>
Press to create a new account: <input type="submit" colspan="12" name="bt_register" value="Register!"><br>
Press to get all: <input type="submit" colspan="12" name="bt_getall" value="GetAll entries"><br>
</form>
<?php
$req_type= $_SERVER['REQUEST_METHOD'];
$data_arr =[];
if(isset($_REQUEST["bt_register"]) ){ // Executes for bt_register only
$data_arr = $_REQUEST;
if($req_type == "GET"){
// Write operations that you want to perform for Register (when the method is GET)"
}elseif($req_type == "POST"){
// Write operations that you want to perform for Register (when the method is POST)"
}else{
throw new \Exception('Invalid method used');
}
// Write operations that you want to perform for all register requests (GET or POST)
echo strip_tags(""); # Converting key-string pair to key-array pair
# Finding k-v pairs for each data
foreach($data_arr as $i=> $value){
echo "---- $i : $value <br>";
}
#... insertion/deletion/updation/creation
}elseif(isset($_REQUEST["bt_getall"])){ // Executes for bt_getall only
if($req_type=='GET'){
echo "Get all req recieved via get";
}
elseif ($req_type=='POST'){
echo "Get all req recieved via post";
}
else {
throw new \Exception('Invalid method used');
}
// Write operations that you want to perform for all getall requests (GET or POST)
}elseif(isset($_REQUEST["bt_login"])){ // executes for bt_login only
// Write code that should be executed on login button press
}
else { // executes for default page load or any other button press
echo "<h2>First time load</h2>";
// Write code (if any) that you want to run on first landing only.
}
?>
代碼更改的說明
die()不應(yīng)按照上一個(gè)答案中的說明使用參考下面引用的您的評論，
<?php ?>在這種情況下再次編寫標(biāo)簽是沒有用的。寫新<?php ?>標(biāo)簽不能調(diào)用已經(jīng)死掉的請求// 必須創(chuàng)建一個(gè)新的，因?yàn)榕f的會(huì)在登錄按下時(shí)死掉
isset($_REQUEST["bt_register"]無論他們的方法如何（GET 或 POST），都可以為您提供數(shù)據(jù)使用 if-else 處理請求類型（注冊、獲取所有、登錄、首次加載等），如上述代碼的注釋中所述
我建議您對每種類型的請求使用不同的 PHP 文件，而不是將所有代碼都寫在一個(gè) index.php 文件中。
子衿沉夜
TA貢獻(xiàn)1828條經(jīng)驗(yàn) 獲得超3個(gè)贊
是的，從字面上看，除了 die() 之外的任何東西。.... 什么都沒有。
例如：
$req_type= $_SERVER['REQUEST_METHOD'];
$data_arr =[];
if($req_type=='GET' and isset($_GET["bt_register"]) ){
$data_arr = $_GET;
}
elseif ($req_type=='POST' and isset($_POST["bt_register"]) ){
$data_arr = $_POST;
}
else{
//do whatever you want here, or nothing at all.
}
但是，更多有用的輸入......
為什么要檢查請求方法？您已將表單設(shè)置為 POST。其他形式會(huì)調(diào)用這個(gè)相同的腳本嗎？我想你想要更像這樣的東西：
<?php
$req_type= $_SERVER['REQUEST_METHOD']; # checking req type
if($req_type=='POST' && isset($_POST["tv_name"]) && isset($_POST["tv_pass"]) ){
echo "Everything is as it should be";
}
else {
//log the error
error_log("Error with POST tv_name or tv-pass", 3, '/var/www/html/myfancyloggingfolder/didsomeonetrytoGET.log');
//display an error message
echo 'This message could be more robust, but either POST was not used or tv_name / tv_pass was not included.';
// if you do not want the script to stop then do not use die or exit here.
}
?>
慕少森
TA貢獻(xiàn)2019條經(jīng)驗(yàn) 獲得超9個(gè)贊
我目前正在使用以下使用函數(shù)來區(qū)分不同按鈕調(diào)用的方法。這樣，只有需要在單擊按鈕時(shí)運(yùn)行的代碼才會(huì)運(yùn)行，因?yàn)閕sset (_REQTYPE[button_id])僅在button_id每次單擊按鈕時(shí)為特定設(shè)置設(shè)置，然后將其清除。（請注意，這些只是我的猜測，因?yàn)槲业拇a對我有用。請隨時(shí)添加更好的、更有事實(shí)支持的推理）：
<?php
$req_type= $_SERVER['REQUEST_METHOD']; # Checking req type
$data_arr =[];
if($req_type=='GET' and isset($_GET["bt_reg"])) { # Pressing bt_reg would make a $_GET=[k1:v1, k2:v2,...] one of the pair will be "bt_reg":"Register!" . so checking if it's set
$data_arr = $_GET;
runRegisterCommands($data_arr);
}
elseif ($req_type=='POST' and isset($_POST["bt_reg"])) { # Pressing bt_reg would make a $_POST=[k1:v1, k2:v2,...] one of the pair will be "bt_reg":"Register!" . so checking if it's set
$data_arr = $_POST;
runRegisterCommands($data_arr);
}
// -----------------------------------------------------
if($req_type=='GET' and isset($_GET["bt_getall"]) ){ # Same as above, but for bt_getall, since bt_getall won't be set up on bt_register click
echo "Get all req received via get";
runGetAllCommands();
}
elseif ($req_type=='POST' and isset($_POST["bt_getall"]) ){
echo "Get all req received via post";
runGetAllCommands();
}
?>
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