Asked  7 Months ago    Answers:  5   Viewed   32 times

If you have a form containing text inputs with duplicate name attributes, and the form is posted, will you still be able to obtain the values of all fields from the $_POST array in PHP?

 Answers

96

No. Only the last input element will be available.

If you want multiple inputs with the same name use name="foo[]" for the input name attribute. $_POST will then contain an array for foo with all values from the input elements.

<form method="post">
    <input name="a[]" value="foo"/>
    <input name="a[]" value="bar"/>
    <input name="a[]" value="baz"/>
    <input type="submit" />
</form>

See the HTML reference at Sitepoint.

The reason why $_POST will only contain the last value if you don't use [] is because PHP will basically just explode and foreach over the raw query string to populate $_POST. When it encounters a name/value pair that already exists, it will overwrite the previous one.

However, you can still access the raw query string like this:

$rawQueryString = file_get_contents('php://input'))

Assuming you have a form like this:

<form method="post">
    <input type="hidden" name="a" value="foo"/>
    <input type="hidden" name="a" value="bar"/>
    <input type="hidden" name="a" value="baz"/>
    <input type="submit" />
</form>

the $rawQueryString will then contain a=foo&a=bar&a=baz.

You can then use your own logic to parse this into an array. A naive approach would be

$post = array();
foreach (explode('&', file_get_contents('php://input')) as $keyValuePair) {
    list($key, $value) = explode('=', $keyValuePair);
    $post[$key][] = $value;
}

which would then give you an array of arrays for each name in the query string.

Wednesday, March 31, 2021
 
xenon
answered 7 Months ago
66

Problem appears to be specific to PhpStorm as issue can be reproduced on another machine running windows 10

Fix

When placing test.php and test2.php into my XAMPP 7.1 localhost directory, the issue does not appear, this also resolves the issue when placing files into WAMP directory on windows 10

Wednesday, March 31, 2021
 
Valdas
answered 7 Months ago
36

Solution: Simply extract common attributes from both views and add them directly as children of the <resources> node:

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <attr name="myattr1" format="string" />
    <attr name="myattr2" format="dimension" />

    <declare-styleable name="MyView1">
        <attr name="myattr1" />
        <attr name="myattr2" />
        ...
    </declare-styleable>

    <declare-styleable name="MyView2">
        <attr name="myattr1" />
        <attr name="myattr2" />
        ...
    </declare-styleable>
</resources>
Saturday, July 10, 2021
 
PandemoniumSyndicate
answered 4 Months ago
44

This error is emitted, if you forget to specify the nameattribute for an ngModel.

You can find following line in your html that contains the error:

<span class="badge badge-sm up bg-danger pull-right-xs" [hidden]="notificationCount<=0" [(ngModel)]="notificationCount"></span>

As you can see, there is no name attribute.

Wednesday, August 11, 2021
 
xilec
answered 2 Months ago
86

First of all, if you are testing all the way from receiving the POSTed data to checking values in the database, this is not unit-test anymore : you are not testing one component in isolation of the others, but you are testing the integration of those components together.

It makes things harder to test :

  • you have to provide data in harder ways : not just as parameters to a method, but as parameters to your whole application (which means forging POST data, here, for instance)
  • you have more things to verify : not just the return value of a method, or if it threw an exception
  • you have several different and maybe unrelated things that can cause a failure (problem in some PHP code, problem in the database, database server not being available, ...), which will make failures harder to track down to find their cause.


Note that I didn't say that kind of "integration" tests is not useful, btw ;-)


Still, forging the $_POST array is quite simple : it is not read-only, and you can store whatever you want in it.

So, at the begining of your test-case, nothing prevents you from injecting any data you need in it.

Thursday, August 12, 2021
 
TMichel
answered 2 Months ago
Only authorized users can answer the question. Please sign in first, or register a free account.
Not the answer you're looking for? Browse other questions tagged :