问题
I need to set the $_GET values; can I do this?
ie I have an empty $_GET array. How can make it nonempty with php?
Maybe with help of http headers?
Thank you in advance;
回答1:
It is three ways of doing this.
One:
<form method="get" action="file.php">
<input type="text" name="TextThing" />
</form>
In the php file:
$_GET["TextThing"]; //contains the text of the texbox TextThing...
Second:
Use a questionmark behind the url, like this: http://domain.com/file.php?foo=bar&stack=overflow
Then:
$_GET["foo"]; //contains bar
$_GET["stack"]; //contains overflow
Remember that your users easily can change the values of the variables.
Third:
$_GET["foo"] = "bar";
$_GET["foo"]; //contains bar
回答2:
$_GET is populated with the params/values sent in the querystring of the url, so if you call http://example.com/my.php?foo=bar&foo2=baz then in my.php $_GET['foo'] => 'bar' and $_GET['foo2'] => 'baz'
回答3:
You can try updating $_GET
$_GET['test'] = 'abc';
And then redirect users there:
header('Location: ?' . http_build_query($_GET));
You just have to make sure to redirect only when necessary, so that you don't take users into infinite redirect.
回答4:
The $_GET array is initially populated from the query string, but you can overwrite that if you want to without redirecting. If at some point in your code you set $_GET['foo'] = 'bar'; then that is set thereafter, no matter what the query string is.
来源：https://stackoverflow.com/questions/4680741/php-settting-get-value