I think there is a problem when I echo $whereArray and orderByArray. If I type in a word such as "Question" and then submit it, I expect it to display in the echos "%".Question."%"; for both arrays. But instead in both echos it just displays "Array" for both echos. Does this mean that both arrays are not working when it comes to storing in the values?
$searchquestion = $_GET['questioncontent'];
$terms = explode(" ", $searchquestion);
$whereArray = array();
$orderByArray = array();
//loop through each term
foreach ($terms as $each) {
$i++;
$whereArray[] = "%".$each."%";
$orderByArray[] = "%".$each."%";
}
echo $whereArray;
echo $orderByArray;
echo() only works for strings. PHP converts your array to "Array" as a fallback.
When you're debugging, you should use var_dump(). It will tell you the type of the object and its content.
Use var_dump or print_r instead of echo (they are functions, not constructs like echo is).
An array needs to be printed out using a special function such as print_r. If you want to print out a value in your array try:
echo $whereArray[0];
To get the first element. Be careful because if the array is empty you will get an error.
you can also loop through them
foreach($arrayname as $value)
echo $value;
or
echo implode("",$arrayname);
Related
for output array Instead of using json_encode, use of what.(how is output(echo) array without use of json_encode?)
i use of codeigniter.
CI_Controller:
function auto_complete(){
$hotel_search = $this->input->post('search_hotel');
echo json_encode($this->model_tour->auto_complete($hotel_search));
// if use of json_encode output is '[{"name":"salal"},{"name":"salaso"},{"name":"salasi"},{"name":"salsh"}]' if don want use of json_encode output is "Array"
}
CI_model:
function auto_complete($hotel_search)
{
$query_hotel_search = $this->db->order_by("id", "desc")->like('name', $hotel_search)->get('hotel_submits');
if($query_hotel_search->num_rows()==0){
return '0';
}else{
$data = array();
foreach ($query_hotel_search->result() as $row)
{
$data[] = array('name' => $row->name);
}
return $data;
}
}
If you just want to view the array, print_r($array) or var_dump($array) will work
I'm not sure if this is what you are looking for, but it really helps show the structure of the array/JSON:
echo "<pre>";
print_r($array);
echo "</pre>";
It will show the $array broken out and will keep the tabbing so you can see how it's nested.
If you want to view the contents of the array, use print_r or vardump
If you want to do something useful with the information, you're going to have to loop through the array
foreach($this->model_tour->auto_complete($hotel_search) as $key => $value){
//do something
}
foreach($array as $key => $value)
{
echo $key . ' = ' . $value . "\n";
}
That will give you the array as string.
You can also use print_r()
print_r($array);
or var_dump()
var_dump($array);
You have a few options at your disposal:
json_encode (which you mention yourself)
print_r or var_dump (timw4mail mentions this)
implode (however, this won't work for nested arrays, and it will only display the keys)
a combination of array_map (to format individual array elements using your own function) and implode (to combine the results)
write your own recursive function that flattens an array into a string
If you're using jQuery, any .ajax(), .get(), or .post() function will try to guess the data type being returned from the HTTP request. Set the content type of your controller to JSON:
$hotel_search = $this->input->post('search_hotel');
$this->output
->set_content_type('application/json')
->set_output( json_encode($this->model_tour->auto_complete($hotel_search)) );
I'm trying to parse a json file into a for each loop. The issue is the data is nested in containers with incremented numbers, which is an issue as I can't then just grab each value in the foreach. I've spent a while trying to find a way to get this to work and I've come up empty. Any idea?
Here is the json file tidied up so you can see what I mean - http://www.jsoneditoronline.org/?url=http://ergast.com/api/f1/current/last/results.json
I am trying to get values such as [number] but I also want to get deeper values such as [Driver][code]
<?php
// get ergast json feed for next race
$url = "http://ergast.com/api/f1/current/last/results.json";
// store array in $nextRace
$json = file_get_contents($url);
$nextRace = json_decode($json, TRUE);
$a = 0;
// get array for next race
// get date and figure out how many days remaining
$nextRaceDate = $nextRace['MRData']['RaceTable']['Races']['0']['Results'][' . $a++ . '];
foreach ($nextRaceDate['data'] as $key=>$val) {
echo $val['number'];
}
?>
While decoding the json there's no need to flatten the object to an Associative array. Just use it how it is supposed to be used.
$nextRace = json_decode($json);
$nextRaceDate = $nextRace->MRData->RaceTable->Races[0]->Results;
foreach($nextRaceDate as $race){
echo 'Race number : ' . $race->number . '<br>';
echo 'Race Points : ' . $race->points. '<br>';
echo '====================' . '<br>';
}
CodePad Example
You are nearly correct with your code, you are doing it wrong when you try the $a++. Remove the $a = 0, you won't need it.
Till here you are correct
$nextRaceDate = $nextRace['MRData']['RaceTable']['Races']['0']['Results']
What you have to do next is this
$nextRaceDate = $nextRace['MRData']['RaceTable']['Races']['0']['Results'];
foreach($nextRaceDate as $key => $value){
foreach($value as $key2 => $value2)
print_r($value2);
So, in my code, you are stopping at Results, and then, you want to iterate over all the results, from 0 to X, the first foreach will do that, you have to access $value for that. So, add another foreach to iterate over all the content that $value has.
There you go, I added a print_r to show you that you are iterating over what you wanted.
The problem is how you access to the elements in the nested array.
Here a way to do it:
$mrData = json_decode($json, true)['MRData'];
foreach($nextRace['RaceTable']['Races'] as $race) {
// Here you have access to race's informations
echo $race['raceName'];
echo $race['round'];
// ...
foreach($race['Results'] as $result) {
// And here to a result
echo $result['number'];
echo $result['position'];
// ...
}
}
I don't know where come's from your object, but, if you're sure that you'll get everytime one race, the first loop could be suppressed and use the shortcut:
$race = json_decode($json, true)['MRData']['RaceTable']['Races'][0];
Your problem is that the index must be an integer because the array is non associative. Giving a string, php was looking for the key '$a++', and not the index with the value in $a.
If you need only the number of the first race, try this way
$a = 0;
$nextRaceDate = $nextRace['MRData']['RaceTable']['Races']['0']['Results'][$a];
echo "\n".$nextRaceDate['number'];
maybe you need to iterate in the 'Races' attribute
If you need all, try this way :
$nextRaceDate = $nextRace['MRData']['RaceTable']['Races'];
foreach ($nextRaceDate as $key => $val) {
foreach ($val['Results'] as $val2) {
echo "\nNUMBER " . $val2['number'];
}
}
I have code which extracting keywords, this keywords with td/idf rating and other options are in $tags. Variable k-keyword consisting of this word. but if i want to print all of these keywords, this keywords look like: one long string, I need to have this keywords separated with " ", or ","...
I have something like that in php
foreach($tags->keywords as $k) {
//$metTag = parseTags($k->keyword);
print_r ($k->keyword);
}
and output is
userarmethodrecommenddelivthidecisconsidactionruleadaptinformmodelcontentsituatbasiengagon-demandproactivmood
but I need output like that:
Array (
[user]
[ar]
[method]
[recommend]
...
)
You can just do
print_r($tags->keywords);
Or this way :
$array = array();
foreach($tags->keywords as $k) {
$array[] = $k->keyword;
}
print_r($array);
Try this:
echo '<pre>';
foreach($tags->keywords as $k) {
print_r ($k->keyword);
}
echo '</pre>';
From the code that you've provided, it looks like $k is an object with the field keyword. Since $tags->keywords is an array you could try to just use print_r($tags->keywords); instead of the loop but this will display all of the fields in the array $tags->keywords as well as dump all of the fields in the $keywords objects within the array. You might also try print_r($k) but again, this will also print all of the fields in the $k object.
Another option would be to simply do this:
print "Array (\n";
foreach($tags->keywords as $k) {
//$metTag = parseTags($k->keyword);
print $k->keyword . "\n";
}
print ")\n"
I'm trying to add values to an array via foreach but it only returns the word "Array" not the actual strings.
$msg = array();
foreach ($results as $result) {
$inventory = $result->qoh;
$inventoryOrder = $result->qo;
$product = $result->item;
$totalinv = $inventory+$inventoryOrder;
if ($inventory <= $threshold) {
$message = "Inventory for $product has fallen beneath threshold. $inventory remaining.\n";
$msg[] = array($message);
}
}
print (array_values($msg));
I've tried a few different ways and everytime it returns the word "Array"
You should use print_r, not print. print is for stings only. Try this:
echo '<pre>'; print_r(array_values($msg)); echo '</pre>';
Use var_dump to see the values.
var_dump (array_values($msg));
var_dump will alway show you the type of the result too. Helps a lot in debugging. (Looking at your code, I'm assuming you are doing the same).
I think you need to change the following code:
$msg[] = array($message);
to
array_push($msg, $message);
i am tring to put a loop to echo a number inside an echo ;
and i tried as bellow :
$array = array();
$result = mysql_query("SHOW TABLES FROM `st_db_1`");
while($row = mysql_fetch_row($result) ){
$result_tb = mysql_query("SELECT id FROM $row[0] LIMIT 1");
$row_tb=mysql_fetch_array($result_tb);
$array[] = $row[0];
$array2[] = $row_tb[0];
//checking for availbility of result_tb
/* if (!$result_tb) {
echo "DB Error, could not list tablesn";
echo 'MySQL Error: ' . mysql_error();
exit;
} */
}
natsort($array);
natsort($array2);
foreach ($array as $item[0] ) {
echo "<a href=show_cls_db.php?id= foreach ($array2 as $item2[0]){echo \"$item2[0]\"}>{$item[0]}<br/><a/>" ;
}
but php is not considering foreach loop inside that echo ;
please suggest me something
As mentioned by others, you cannot do loops inside a string. What you are trying to do can be achieved like this:
foreach ($array as $element) {
echo "<a href='show_cls_db.php?id=" . implode('', $array2) . "'>{$element}</a><br/>";
}
implode(...) concatenates all values of the array, with a separator, which can be an empty string too.
Notes:
I think you want <br /> outside of <a>...</a>
I don't see why you would want to used $item[0] as a temporary storage for traverser array elements (hence renamed to $element)
Just use implode instead of trying to loop the array,
foreach ($array as $item)
{
echo implode("",$array2);
}
other wise if you need to do other logic for each variable then you can do something like so:
foreach ($array as $item)
{
echo '<a href="show_details.php?';
foreach($something as $something_else)
{
echo $something_else;
}
echo '">Value</a>';
}
we would have to see the contents of the variables to understand what your trying to do.
As a wild guess I would think your array look's like:
array(
id => value
)
And as you was trying to access [0] within the value produced by the initial foreach, you might be trying to get the key and value separate, try something like this:
foreach($array as $id => $value)
{
echo $id; //This should be the index
echo $value; //This should be the value
}
foreach ($array as $item ) {
echo "<a href=\"show_cls_db.php?id=";
foreach ($array2 as $item2) { echo $item2[0]; }
echo "\">{$item[0]}<br/><a/>" ;
}
No offense but this code is... rough. Post it on codereview.stackexchange.com for some help re-factoring it. A quick tip for now would be to use PDO, and at the least, escape your inputs.
Anyway, as the answers have pointed out, you have simply echoed out a string with the "foreach" code inside it. Take it out of the string. I would probably use implode as RobertPitt suggested. Consider sorting and selecting your data from your database more efficiently by having mysql do the sorting. Don't use as $item[0] as that makes absolutely no sense at all. Name your variables clearly. Additionally, your href tag is malformed - you may not see the correct results even when you pull the foreach loop out of the echo, as your browser may render it all away. Make sure to put those quotes where they should be.