我的新密码不允许使用＆

I have a window on my site where the visitors can change them password.

The problem is that the & character is never taken :

If I put those two new passwords :

stack& stack& (the second is the confirmation)

The insertion in the BD is stack (without the &).

This is the js code :

data: 'nouveau_mdp=' + $('input#champ_nouveau_mdp').val(),

the alert shwos me "stack&"

In PHP, a var_dump of $_POST gives me :

stack (without the &).

Is & a reserved word for jquery ?

This is my js code :

$.ajax({
                            type: 'POST',
                            url: 'modification_mdp.php',
                            data: 'nouveau_mdp=' + $('input#champ_nouveau_mdp').val(),
                            dataType: 'text',
                            success: function(reponse) {
                                reponse = $.trim(reponse);

Have you an idea to reselove this problem please ?

Thanks in advance.

The ampersand character is not allowed to pass by Get method or by Post method in PHP. As the usual syntax to access the PHP by GET method is ines.php?user=username&password=mypassword, the '&' character separates the two Variables.

That is why it is does not take '&' from 'Stack&' You may use Javascript to Validate if & is not entered in the text Box. Use JavaScript to encode the varaible... No decoding is required at the PHP end

encodeURIComponent("stack&")

Encode the field value

data: 'nouveau_mdp=' + encodeURI($('input#champ_nouveau_mdp').val()),

by this way & is encoded with the ascii number.

Try passing an associative array, which jQuery will encode for you:

data: { nouveau_mdp: $('input#champ_nouveau_mdp').val() }

You'll need to change the PHP code that receives this value to match (it gets an array rather than a string).

This line is the problem:

data: 'nouveau_mdp=' + $('input#champ_nouveau_mdp').val(),

The & character has a special meaning in HTTP. If you had multiple parameters they would be separated by & e.g. nouveau_mdp=mynewpassword&old_mdp=myoldpassword

What you need to do is encode characters such as &, = etc as their hex equivalents i.e. %26 and %3D respectively.

In JavaScript you can do this with the encodeURI() function.

Though, as mentioned in the other answer, jQuery also allows you to pass a JSON dictionary of parameters, and it will do the encoding for you.