将值传递给服务器[重复]

Question

This question already has an answer here:

• How do I pass JavaScript variables to PHP? 14 answers

I have been trying to find methods to pass variables from client to server What is making it difficult for me is:

1. I have an unknown number of variables( The program that I am working on pass different number of variables/arrays to server side depending on what the user is doing )
2. The user could be using any character including & and = therefore if I passed the variables as multiple/one GET variable/s the user could pass = and & which will affect the GET variables

I am looking for methods ( a solution ) to pass variables, preferably arrays, to server side ( like PHP )

Appreciate your time and help :)

</div>

Answer 1

To pass arrays to the server, you would do something like this (note the [] in the name, this signifies an array):

<input type="checkbox" name="myCheckBox[]" value="One" />
<input type="checkbox" name="myCheckBox[]" value="Two" />
<input type="checkbox" name="myCheckBox[]" value="Three" />
<input type="checkbox" name="myCheckBox[]" value="Four" />

Then in php you would do something like this:

foreach($_POST['myCheckBox'] as $value){
    echo "<p>$value</p>";
}

You would then get output that looks like this (assuming all but Two was selected):

One
Three
Four

So assuming you are not using javascript to pass the data, the browser should automatically encode the data. If you are using javascript you can pass the data to the javascript function escape() and it will escape/encode the data to be passed to the server.

Also for jquery you can use the serialize() operation:

$.ajax(
     url: "/to/file.php",
     data: $("#my_form").serialize(), // <form id="my_form">
     success: function(){
         // Do some stuff
     }
);

Here is another way to pass data:

<input type="text" name="names[0]['name']['first']" />
<input type="text" name="names[0]['name']['last']" />
<input type="radio" name="names[0]['gender']" value="male" />
<input type="radio" name="names[0]['gender']" value="female" />

<input type="text" name="names[1]['name']['first']" />
<input type="text" name="names[1]['name']['first']" />
<input type="radio" name="names[1]['gender']" value="male" />
<input type="radio" name="names[1]['gender']" value="female" />

<input type="text" name="names[2]['name']['first']" />
<input type="text" name="names[2]['name']['first']" />
<input type="radio" name="names[2]['gender']" value="male" />
<input type="radio" name="names[2]['gender']" value="female" />

<input type="text" name="names[3]['name']['first']" />
<input type="text" name="names[3]['name']['first']" />
<input type="radio" name="names[3]['gender']" value="male" />
<input type="radio" name="names[3]['gender']" value="female" />

The in the php you would do this for example:

foreach($_POST['names'] as $name){
    echo "<p>" . $name["name"]["first"] . " is a " . $name["gender"] . "</p>";
}