I need the array as (2) from a single query
can anyone help ?
1. Array
(
[0] => Array
(
[crop_id] => 3
[crop_name] => Barley
)
2. Array
(
[0] => Array
(
[Barley] => 3
)
)
Don't know about query but you can do that simply using array_map()
$array[] = array('crop_id' => 3, 'crop_name' => "Barley");
$result = array_map("myfunction",$array);
print_r($result);
function myfunction($v)
{
$data = [];
$data[$v['crop_name']] = $v['crop_id'];
return $data;
}
Let's suppose you have stored your data in array named as crop_data like
$crop_data[0][crop_id]=3;
$crop_data[0][crop_name]='Barley';
....
$crop_data[n][crop_id]=187;
$crop_data[n][crop_name]='Wheat'
Try this code:
$new_crop_result=array()
foreach($crop_data as $key=>$record)
{
$new_crop_result[$key][$record[crop_name]]=$record[crop_id];
}
Related
I have this array:
[docs] => Array
(
[indexone] => Array ( [0] => P008062518 )
[indextwo] => Array ( [0] => )
[indexthree] => Array ( [0] => 0000141334 )
[indexfour] => Array ( [0] => P006871638 )
[indexfive] => Array ( [0] => 0000910067 )
[indexsix] => Array ( [0] => )
)
I need to end with this one, extracting all values from the given key:
[docValues] => Array
(
[indexone] => Array ( P008062518, 0000141334, P006871638, 0000910067 )
)
I try this loop but i end with the same array structure :
foreach($values as $key => $data)
{
if(array_key_exists('docs', $data) )
{
$filtered = array_filter($data['docs'], function($var) { return !empty($var);});
$numDocs = array_values($filtered);
$values[$key]['docValues'] = $numDocs;
}
}
How can it be done ?
To get that exact array output:
$result['docValues'][key($values['docs'])] =
array_filter(array_column($values['docs'], 0));
Get the first key to use it as your new key with key()
Get an array of all values in the 0 indexes with array_column()
Remove empty elements using array_filter()
If your first array is called $docArray, then you can do the following:
$docValuesArray = array();//declaring the result array
$indexoneArray = array();//declaring the array you will add values
//to in the foreach loop
foreach ($docArray as $value)
{
$indexoneArray[] = $value[0];//giving each of the values
//found in $docArray to the $indexoneArray
}
$docValueArray[] = $indexoneArray;//adding the $indexoneArray
//to the $docsValueArray
Let me know if that worked for you.
This should do the trick for you:
$docs = [
'indexone' => ['P008062518'],
'indextwo' => [ ],
'indexthree' => ['0000141334'],
'indexfour' => ['P006871638'],
'indexfive' => ['0000910067'],
'indexsix' => [ ],
];
$allDocs = array();
foreach($docs as $key => $doc) {
$docString = implode("<br>",$doc);
if (empty($docString)) {
continue;
}
$allDocs[] = $docString;
}
$allDocsString = implode("<br>",$allDocs);
echo($allDocsString);
P0080625180000141334P0068716380000910067
Simply do this:
Your array
$arr = array("docs" =>
array(
'indexone' => array('P008062518'),
'indextwo' => array(''),
'indexthree' => array('0000141334'),
'indexfour' => array('P006871638'),
'indexfive' => array('0000910067'),
'indexsix' => array('')
)
);
Process:
echo '<pre>';
$index = key($arr["docs"]);
$output['docValues'][$index] = implode('<br/>', array_filter(array_column($arr['docs'], 0)));
print_r($output);
Explanation:
key = key function Returns the first index.
implode = collapse all the array items with the delimiter of <br/>
array_filter = filters the values of an array using a callback
function.
array_column = returns the values from a single column in the input
array.
Result:
Array
(
[docValues] => Array
(
[indexone] => P008062518<br/>0000141334<br/>P006871638<br/>0000910067
)
)
use array_filter() function . if you pass array in array_filter then remove all empty and NULL data record
I have build my user table like this:
Now I would like to select the 3 blue rows.
I have build the following function:
function display_children($parent, $array = array()) {
global $db;
$stmt = $db->prepare("SELECT id AS man, parent_id FROM user WHERE parent_id= ?");
$stmt->execute(array($parent));
while ($row = $stmt->fetch(PDO::FETCH_ASSOC)) {
display_children($row['man'], $array);
$array[] = array("man" => $row['man'], "parent_id" => $row['parent_id']);
echo $row['man']."\n"; //for debug
}
return $array;
}
print_r(display_children(50001));
My Output is:
50002
50004
50003
Array
(
[0] => Array
(
[man] => 50002
[parent_id] => 50001
)
[1] => Array
(
[man] => 50003
[parent_id] => 50001
)
)
The first three lines are correct, but the array is missing one.
The problem is, that the first parent_id has two rows. But the array is empty at the beginning. Is there a solution for my query?
the solution was to change the following line from
display_children($row['man'], $array);
to
$array = display_children($row['man'], $array);
This has to be easy but I am struggling with it. If the array below exists (named "$startersnames") and I specifically want to echo the value that has "qb" as the key, how do I do that?
I assumed $startersnames['qb'], but no luck.
$startersnames[0]['qb'] works, but I won't know that it's index 0.
Array
(
[0] => Array
(
[qb] => Tannehill
)
[1] => Array
(
[rb] => Ingram
)
[2] => Array
(
[wr] => Evans
)
[3] => Array
(
[wr] => Hopkins
)
[4] => Array
(
[wr] => Watkins
)
[5] => Array
(
[te] => Graham
)
[6] => Array
(
[pk] => Hauschka
)
[7] => Array
(
[def] => Rams
)
[8] => Array
(
[flex] => Smith
)
)
You can use array_column (from php 5.5) like this:
$qb = array_column($startersnames, 'qb');
echo $qb[0];
Demo: http://3v4l.org/QqRuK
This approach is particularly useful when you need to print all the wr names, which are more than one. You can simply iterate like this:
foreach(array_column($startersnames, 'wr') as $wr) {
echo $wr, "\n";
}
You seem to be expecting an array with text keys and value for each, but the array you have shown is an array of arrays: i.e. each numeric key has a value which is an array - the key/value pair where you are looking for the key 'qb'.
If you want to find a value at $array['qb'] then your array would look more like:
$array = [
'qb' => 'Tannehill',
'rb' => 'etc'
];
now $array['qb'] has a value.
If the array you are inspecting is a list of key/value pairs, then you have to iterate over the array members and examine each (i.e. the foreach loop shown in your first answer).
For your multi-dim array, you can loop through the outer array and test the inner array for your key.
function findKey(&$arr, $key) {
foreach($arr as $innerArr){
if(isset($innerArr[$key])) {
return $innerArr[$key];
}
}
return ""; // Not found
}
echo findKey($startersnames, "qb");
You can try foreach loop
$key = "qb";
foreach($startersnames as $innerArr){
if(isset($innerArr[$key])) {
echo $innerArr[$key];
}
}
$keyNeeded = 'qb';
$indexNeeded = null;
$valueNeeded = null;
foreach($startersnames as $index => $innerArr){
//Compare key
if(key($innerArray) === $keyNeeded){
//Get value
$valueNeeded = $innerArr[key($innerArray)];
//Store index found
$indexNeeded = $index;
//Ok, I'm found, let's go!
break;
}
}
if(!empty($indexNeeded) && !empty($valueNeeded)){
echo 'This is your value: ';
echo $startersnames[$indexNeeded]['qb'];
echo 'Or: ':
echo $valueNeeded;
}
http://php.net/manual/en/function.key.php
I have 5 different array whose structure is :-
Array ( [0] => http://www.php.net/200
)
Array ( [0] => http://www.php.net/?setbeta=1&beta=1302
)
Array ( [0] => http://www.php.net/downloads.php200
)
Array ( [0] => http://www.php.net/docs.php200
)
Array ( [0] => http://www.php.net/FAQ.php302
)
I need to merge these all in a single array whose structure would be like:-
Array ( [0] => http://www.php.net/200
[1] => http://www.php.net/?setbeta=1&beta=1302
[2] => http://www.php.net/downloads.php200
[3] => http://www.php.net/docs.php200
[4] => http://www.php.net/FAQ.php302
)
One thing i want to confirm that these arrays are forming inside a loop function and it could be of any number and also they have a single name i.e $array
Simplest is probably just array_merge().
$merged = array_merge( $ar1, $ar2, $ar3, $ar4, $ar5 );
Use array_merge.
$arr = array_merge($arr1,$arr2,$arr3,$arr4,$arr5);
Edit After seeing your comment, you are having multidimensional array.
$arr = array();
for($i = 0; $i < $old_arr; $i++) {
$arr[] = $old_arr[$i][0];
}
Use array_merge
$arr1=Array ( 0 => 'http://www.php.net/200');
$arr2=Array( 0 => 'http://www.php.net/?setbeta=1&beta=1302');
$arr3=Array( 0 => 'http://www.php.net/downloads.php200');
$merged=array_merge($arr1,$arr2,$arr3);
print_r($merged);
$newarray = array();
while ( is_array( array_get_function_here() ) )
{
$newarray = array_merge( $newarray, $array );
}
I would try that if you get the different arrays in a looping function.
The above $array is something that array_get_function_here() should return for the while loop validity check (if it returns and array, the while check runs as true). array_get_function_here() is just an example and should be some function that returns a value for $array.
I have an array that is generated from a SQL query that I run. It looks like the following:
$arr[$i]['id'] = $id;
$arr[$i]['name'] = $name;
$arr[$i]['email'] = $email;
How can I get the unique values from the email column? I appreciate the help.
The best answer is :
array_unique(array_column($arr, 'email'))
Either filter it in your column using the DISTINCT method in MySQL, or use something like
$uniqueEmails = array();
foreach($arr as $array)
{
if(!in_array($array['email'], $uniqueEmails)
$uniqueEmails[] = $array['email'];
}
Since PHP 5.5, a new function called array_column() is also available.
You can use it following way:
$allEmails = array_column($arr, 'email');
$uniqueEmails = array_unique($allEmails);
Remove duplicates from array comparing a specific key
Consider the same array but id of 3rd index is different:
$all_array = Array
(
[0] => Array
(
[id] => 1
[value] => 111
)
[1] => Array
(
[id] => 2
[value] => 222
)
[2] => Array
(
[id] => 3
[value] => 333
)
[3] => Array
(
[id] => 4
[value] => 111
)
)
Now, both 1 & 4 have same values. So we want to remove any of them:
$unique_arr = array_unique( array_column( $all_array , 'value' ) );
print_r( array_intersect_key( $all_array, $unique_arr ) );
If you get the list sorted by email from SQL you can improve performance by looping through the array like Gareth does, but instead only compare current email address with the last inserted email address. Below is a code example for this:
$uniqueEmails = array();
$lastemail = '';
foreach($arr as $array)
{
if($array['email'] != $lastemail)
{
$uniqueEmails[] = $array['email'];
$lastemail = $array['email'];
}
}