I am very new in PHP and I was checking whether all my controlers are in so how can I echo this? what I tried resulting nothing
$controllers = array_intersect($json_api->get_controllers(), $active_controllers );
$return = array(
'json_api_version' => $version,
'controllers' => array_values($controllers)
);
echo $return['controllers']['controllers'];
use print_r function:
print_r($return['controllers']);
when you want read city you do:
$arr_controllers = $return['controllers'];
$key_2 = $arr_controllers[2];
where 2 is the key
If you want to print the values of an array with a
understandable format you should use print_r() instead of echo like so:
print_r($return['controllers']);
You can also use var_dump() to get some extra information about the fields, like the type and lenght.
If what you need is to asign a certain index of the array to a value just do something like this:
$variable = $return['controllers'][indexOfField]; // indexOfField=2 for city field
echo $variable;
For further information about print_r() check the official manual.
Related
Mycode is given below:
// seatsToCancel=U23,L43,U12
$tin='S4243534'; //Booking id
$seatsToCancel=$_GET['seatsToCancel'];
$seatArray=explode(",",$seatsToCancel);
$seatCount=count($seatArray);
$SeatsTocancel=implode ( '", "', $seatArray );
$params = array(
"tin"=>"$tin",
"seatsToCancel"=>array($SeatsTocancel)
);
echo $params=json_encode($params);
I want output like this:
{"tin":"S4243534" ,"seatsToCancel":["U23","L43","U12"]}
I assume your $seatArray is ["U23","L43","U12"]?
In that case you can do like this:
$seatArray = ["U23","L43","U12"];
$finalarray = ["tin"=>$tin,"seatsToCancel" => $seatArray];
echo json_encode($finalarray); //{"tin":"S4243534","seatsToCancel":["U23","L43","U12"]}
Edited to add the new requirement from edited question
So I'm guessing that your seats to cancel are coming in as a comma-separated list from the URL. So all you need to do is explode() the GET parameter to turn it into an array, place it as the value to a key and json_encode() it.
i.e.
$seatsToCancel = explode(',', $_GET['seatsToCancel']);
$params = [
'tin' => $tin,
'seatsToCancel' => $seatsToCancel,
];
$paramsJson = json_encode($params);
That should get you the result you're after:
{"tin":"S4243534" ,"seatsToCancel":["U23","L43","U12"]}
You may want to consider what happens if the GET parameter is empty and whether or not you want any additional error checking.
$nesAry=array();
$nesAry["name"]="abc";
$nesAry["email"]="abc#email.com";
$nesAry1=array();
$nesAry1["name"]="abc1";
$nesAry1["email"]="abc1#email.com";
$nesAry2=array();
$nesAry2["name"]="abc2";
$nesAry2["email"]="abc2#email.com";
$responseAry = array();
$responseAry[0]=$nesAry;
$responseAry[1]=$nesAry1;
$responseAry[2]=$nesAry2;
echo json_encode($responseAry); // here output like this => [{"name":"abc","email":"abc#email.com"},{"name":"abc1","email":"abc1#email.com"},{"name":"abc2","email":"abc2#email.com"}]
unset($responseAry[1]);
echo "------------removed 1--------";
echo json_encode($responseAry); // but here output like this => {"0":{"name":"abc","email":"abc#email.com"},"2":{"name":"abc2","email":"abc2#email.com"}}
I want Out put Like this after removing an element \n [{"name":"abc","email":"abc#email.com"},{"name":"abc2","email":"abc2#email.com"}]
Please Help me
Try to regenerate your array after unset an item:
$nesAry=array();
$nesAry["name"]="abc";
$nesAry["email"]="abc#email.com";
$nesAry1=array();
$nesAry1["name"]="abc1";
$nesAry1["email"]="abc1#email.com";
$nesAry2=array();
$nesAry2["name"]="abc2";
$nesAry2["email"]="abc2#email.com";
$responseAry = array();
$responseAry[0]=$nesAry;
$responseAry[1]=$nesAry1;
$responseAry[2]=$nesAry2;
echo json_encode($responseAry); // __here output like this => [{"name":"abc","email":"abc2#email.com"},{"name":"abc1","email":"abc1#email.com"},{"name":"abc2"}]__
unset($responseAry[1]);
$responseAry = array_values($responseAry); //regenerate array(reindexing)
echo "------------removed 1--------";
echo json_encode($responseAry); //[{"name":"abc","email":"abc#email.com"},{"name":"abc2","email":"abc2#email.com"}]
EDIT:
As other option you can use array_splice method http://php.net/manual/en/function.array-splice.php
$nesAry=array();
$nesAry["name"]="abc";
$nesAry["email"]="abc#email.com";
$nesAry1=array();
$nesAry1["name"]="abc1";
$nesAry1["email"]="abc1#email.com";
$nesAry2=array();
$nesAry2["name"]="abc2";
$nesAry2["email"]="abc2#email.com";
$responseAry = array();
$responseAry[0]=$nesAry;
$responseAry[1]=$nesAry1;
$responseAry[2]=$nesAry2;
echo json_encode($responseAry); // __here output like this => [{"name":"abc","email":"abc2#email.com"},{"name":"abc1","email":"abc1#email.com"},{"name":"abc2"}]__
array_splice($responseAry,1,1);
echo "------------removed 1--------";
echo json_encode($responseAry);
Your array when first converted to json is a so called "associative" array, and json_encode then exports it to the object you see in the first echo.
After your unset, the array is changed to a "numeric" array and json_encode will export the array with array keys.
Php it self does not care about how the array is used, but json_encode does.
You can use
echo json_encode(array_values($responseAry));
Or not change the final array you want to export
I have an array that is filled with different sayings and am trying to output a random one of the sayings. My program prints out the random saying, but sometimes it prints out the variable name that is assigned to the saying instead of the actual saying and I am not sure why.
$foo=Array('saying1', 'saying2', 'saying3');
$foo['saying1'] = "Hello.";
$foo['saying2'] = "World.";
$foo['saying3'] = "Goodbye.";
echo $foo[array_rand($foo)];
So for example it will print World as it should, but other times it will print saying2. Not sure what I am doing wrong.
Drop the values at the start. Change the first line to just:
$foo = array();
What you did was put values 'saying1' and such in the array. You don't want those values in there. You can also drop the index values with:
$foo[] = 'Hello.';
$foo[] = 'World.';
That simplifies your work.
You declared your array in the wrong way on the first line.
If you want to use your array as an associative Array:
$foo=Array('saying1' => array (), 'saying2' => array(), 'saying3' => array());
Or you can go for the not associative style given by Kainaw.
Edit: Calling this on the not associative array:
echo("<pre>"); print_r($foo); echo("</pre>");
Has as output:
Array
(
[0] => saying1
[1] => saying2
[2] => saying3
[saying1] => Hello.
[saying2] => World.
[saying3] => Goodbye.
)
Building on what #Answers_Seeker has said, to get your code to work the way you expect it, you'd have to re-declare and initialise your array using one of the methods below:
$foo=array('saying1'=>'Hello.', 'saying2'=>'World.', 'saying3'=>'Goodbye.');
OR this:
$foo=array();
$foo['saying1'] = "Hello.";
$foo['saying2'] = "World.";
$foo['saying3'] = "Goodbye.";
Then, to print the contents randomly:
echo $foo[array_rand($foo)];
How would I setup an associative array to reference specific values at different sections of a page. My function:
<?php
function park_data($park_page_id) {
$data = array();
if($park_page_id){
$data = mysql_fetch_assoc(mysql_query("SELECT * FROM `park_profile` WHERE `park_id` = $park_page_id"));
return $data;
}
}
?>
My print_r:
<?php
print_r (park_data(1));
?>
Produces the following associative array:
Array ( [park_id] => 1 [park_name] => Kenai Fjords [park_address] => 1212 4th Avenue [park_city] => Seward [park_state] => Alaska [park_zip] => 99664)
How would I print just the [park_name] value from this array?
From the docs:
As of PHP 5.4 it is possible to array dereference the result of a function or method call directly. Before it was only possible using a temporary variable.
// on PHP 5.4
print_r(park_data(1)['park_name']);
// earlier versions
$tmp = park_data(1);
print_r($tmp['park_name']);
$park=park_data(1);
echo $park['park_name'];
To output custom formatted text in general, and in this case to output only a single array's key value, use echo, because print_r() called on an array displays the whole array's structure and content, and that's not what you want:
<?php
// code
$park_data=park_data(1);
echo $park_data["park_name"];
// code
?>
foreach ($_GET as $field => $label)
{
$datarray[]=$_GET[$field];
echo "$_GET[$field]";
echo "<br>";
}
print_r($datarray);
This is the output I am getting. I see the data is there in datarray but when
I echo $_GET[$field]
I only get "Array"
But print_r($datarray) prints all the data. Any idea how I pull those values?
OUTPUT
Array (
[0] => Array (
[0] => Grade1
[1] => ln
[2] => North America
[3] => yuiyyu
[4] => iuy
[5] => uiyui
[6] => yui
[7] => uiy
[8] => 0:0:5
)
)
EDIT: When I completed your test, here was the final URL:
http://hofstrateach.org/Roberto/process.php?keys=Grade1&keys=Nathan&keys=North%20America&keys=5&keys=3&keys=no&keys=foo&keys=blat&keys=0%3A0%3A24
This is probably a malformed URL. When you pass duplicate keys in a query, PHP makes them an array. The above URL should probably be something like:
http://hofstrateach.org/Roberto/process.php?grade=Grade1&schoolname=Nathan®ion=North%20America&answer[]=5&answer[]=3&answer[]=no&answer[]=foo&answer[]=blat&time=0%3A0%3A24
This will create individual entries for most of the fields, and make $_GET['answer'] be an array of the answers provided by the user.
Bottom line: fix your Flash file.
Use var_export($_GET) to more easily see what kind of array you are getting.
From the output of your script I can see that you have multiple nested arrays. It seems to be something like:
$_GET = array( array( array("Grade1", "ln", "North America", "yuiyyu", "iuy", "uiyui", "yui","uiy","0:0:5")))
so to get those variables out you need something like:
echo $_GET[0][0][0]; // => "Grade1"
calling echo on an array will always output "Array".
print_r (from the PHP manual) prints human-readable information about a variable.
Use <pre> tags before print_r, then you will have a tree printed (or just look at the source. From this point you will have a clear understanding of how your array is and will be able to pull the value you want.
I suggest further reading on $_GET variable and arrays, for a better understanding of its values
Try this:
foreach ($_GET as $field => $label)
{
$datarray[]=$_GET[$field];
echo $_GET[$field]; // you don't really need quotes
echo "With quotes: {$_GET[$field]}"; // but if you want to use them
echo $field; // this is really the same thing as echo $_GET[$field], so
if($label == $_GET[$field]) {
echo "Should always be true<br>";
}
echo "<br>";
}
print_r($datarray);
It's printing just "Array" because when you say
echo "$_GET[$field]";
PHP can't know that you mean $_GET element $field, it sees it as you wanting to print variable $_GET. So, it tries to print it, and of course it's an Array, so that's what you get. Generally, when you want to echo an array element, you'd do it like this:
echo "The foo element of get is: {$_GET['foo']}";
The curly brackets tell PHP that the whole thing is a variable that needs to be interpreted; otherwise it will assume the variable name is $_GET by itself.
In your case though you don't need that, what you need is:
foreach ($_GET as $field => $label)
{
$datarray[] = $label;
}
and if you want to print it, just do
echo $label; // or $_GET[$field], but that's kind of pointless.
The problem was not with your flash file, change it back to how it was; you know it was correct because your $dataarray variable contained all the data. Why do you want to extract data from $_GET into another array anyway?
Perhaps the GET variables are arrays themselves? i.e. http://site.com?var[]=1&var[]=2
It looks like your GET argument is itself an array. It would be helpful to have the input as well as the output.