I want to group in subarray the identical values while preserving the original order of each group of values.
I want this :
array('a','b','b','c','c','c','a','a');
to become :
array( array('a'),array('b','b'),array('c','c','c'),array('a','a'));
$source = array('a','b','b','c','c','c','a','a');
$tempvalue = false;
$temparr = array();
$new = array();
foreach ($source as $value) {
if ($tempvalue && $value != $tempvalue){
$new[] = $temparr;
$temparr = array();
}
$temparr[] = $value;
$tempvalue = $value;
}
$new[] = $temparr;
echo json_encode($new);
output:
[["a"],["b","b"],["c","c","c"],["a","a"]]
Related
I have an array that looks like this:
$ratingsInPosts = array
(
array("1",3),
array("2",5),
array("2",2),
array("5",2),
array("90",1),
array("5",6),
array("2",2),
);
I Want to find duplicate values in the first column and avarage its values from the second column.
So that this("1",3),("2",5),("2",2),("5",2),("90",1),("5",6),("2",2)
ends up like this ("1",3),("2",3),("5",4),("90",1)
Try this tested solution
I got the required Output
$ratingsInPosts = array
(
array("1",3),
array("2",5),
array("2",2),
array("5",2),
array("90",1),
array("5",6),
array("2",2),
);
$arr1 = array_column($ratingsInPosts, 0);
$p = array_count_values($arr1);
foreach($p as $key => $value)
{
$sum = 0;
for($i=0; $i < $value; $i++)
{
$pos = array_search($key, $arr1);
$sum += $ratingsInPosts[$pos][1];
unset($arr1[$pos]);
unset($ratingsInPosts[$pos]);
}
$re[] = array('"'.$key.'"',$sum/$value);
}
print_r($re);
I hope it helps you:
$groups = array();
// in this loop we group values by first column
foreach ($ratingsInPosts as $row) {
$key = $row[0];
if (!isset($groups[$key]) {
$groups[$key] = array();
}
$groups[$key][] = $row[1];
}
$result = array();
foreach ($groups as $key => $value) {
$avg = array_sum($value) / count($value);
$row = array($key, $avg);
$result[] = $row;
}
<?php
header('Content-Type: text/plain');
$ratingsInPosts = array(array("1",3),array("2",5),array("2",2),array("5",2),array("90",1),array("5",6),array("2",2));
$result = array();
$output = array();
foreach($ratingsInPosts as $array){
$result[$array[0]][] = $array[1];
}
foreach($result as $key=>$array){
$output[] = array($key,round(array_sum($array)/count($array)));
}
var_export($output);
?>
$array = ['coke.','fanta.','chocolate.'];
foreach ($array as $key => $value) {
if (strlen($value)<6) {
$new[] = $value." ".$array[$key+1];
} else {
$new[] = $value;
}
}
This code doesn't have the desired effect, in fact it doesn't work at all. What I want to do is if an array element has string length less than 5, join it with the next element. So in this case the array should turn into this:
$array = ['coke. fanta.','chocolate.'];
$array = ['coke.','fanta.','chocolate.', 'candy'];
$new = [];
reset($array); // ensure internal pointer is at start
do{
$val = current($array); // capture current value
if(strlen($val)>=6):
$new[] = $val; // long string; add to $new
// short string. Concatenate with next value
// (note this moves array pointer forward)
else:
$nextVal = next($array) ? : '';
$new[] = trim($val . ' ' . $nextVal);
endif;
}while(next($array));
print_r($new); // what you want
Live demo
With array_reduce:
$array = ['coke.', 'fanta.', 'chocolate.', 'a.', 'b.', 'c.', 'd.'];
$result = array_reduce($array, function($c, $i) {
if ( strlen(end($c)) < 6 )
$c[key($c)] .= empty(current($c)) ? $i : " $i";
else
$c[] = $i;
return $c;
}, ['']);
print_r($result);
demo
<pre>
$array = ['coke.','fanta.','chocolate.'];
print_r($array);
echo "<pre>";
$next_merge = "";
foreach ($array as $key => $value) {
if($next_merge == $value){
continue;
}
if (strlen($value)<6) {
$new[] = $value." ".$array[$key+1];
$next_merge = $array[$key+1];
} else {
$new[] = $value;
}
}
print_r($new);
</pre>
Updated Code after adding pop after chocolate.
<pre>
$array = ['coke.','fanta.','chocolate.','pop'];
print_r($array);
echo "<br>";
$next_merge = "";
foreach ($array as $key => $value) {
if($next_merge == $value){
continue;
}
if (strlen($value)<6 && !empty($array[$key+1])) {
$new[] = $value." ".$array[$key+1];
$next_merge = $array[$key+1];
} else {
$new[] = $value;
}
}
print_r($new);
<pre>
You need to skip the iteration for the values that you have already added.
$array = ['coke.', 'fanta.', 'chocolate.'];
$cont = false;
foreach ($array as $key => $value) {
if ($cont) {
$cont = false;
continue;
}
if (strlen($value) < 6 && isset($array[$key+1])) {
$new[] = $value.' '.$array[$key+1];
$cont = true;
}
else {
$new[] = $value;
}
}
print_r($new);
I have two variable:
$keystr = 'plant,fruit,exotic';
$value='kiwi';
how can i create the associative array?
$arr = ('plant'=>array('fruit'=>array('exotic'=>'kivi')));
$keystr = 'plant,fruit,exotic';
$value='kiwi';
$arr = array();
$current = &$arr;
$keys = explode(',', $keystr);
foreach($keys as $key) {
$current[$key] = array();
$current = &$current[$key];
}
$current = $value;
unset($current);
var_dump($arr);
See http://ideone.com/YiMIRb for a demonstration
I have following arrays :
$t[0] = array('one'=>array('a'=>2,'b'=>3,'c'=>2,'e'=>4));
$t[1] = array('two'=>array('a'=>2,'b'=>3,'c'=>2,'e'=>4));
$t[2] = array('one'=>array('a'=>2,'b'=>3,'c'=>2,'e'=>4));
$t[3] = array('three'=>array('a'=>2,'b'=>3,'c'=>2,'e'=>4));
I want to remove duplicate arrays from above arrays, the result should be :
$t[0] = array('one'=>array('a'=>2,'b'=>3,'c'=>2,'e'=>4));
$t[1] = array('two'=>array('a'=>2,'b'=>3,'c'=>2,'e'=>4));
$t[2] = array('three'=>array('a'=>2,'b'=>3,'c'=>2,'e'=>4));
Thanks
$t[0] = array('one'=>array('a'=>2,'b'=>3,'c'=>2,'e'=>4));
$t[1] = array('two'=>array('a'=>2,'b'=>3,'c'=>2,'e'=>4));
$t[2] = array('one'=>array('a'=>2,'b'=>3,'c'=>2,'e'=>4));
$t[3] = array('three'=>array('a'=>2,'b'=>3,'c'=>2,'e'=>4));
$array = array();
foreach ($t as $key=>$value) {
if (!in_array ($value, $array)) {
$array [$key] = $value;
}
}
print_r ($array);
From what I understand what you want to do is remove duplicate keys from a multi-dimensional array.
Something like this should do the trick:
$new_array = array();
foreach($t as $array) {
foreach($array as $k => $v) {
if(!array_key_exists($k, $new_array)) {
$new_array[$k] = $v;
}
}
}
I have an array for example ("1:2","5:90","7:12",1:70,"29:60") Wherein ID and Qty are separated by a ':' (colon), what I want to do is when there's a duplicate of IDs the program will add the qty and return the new set of arrays so in the example it will become ("1:72","5:90","7:12","29:60").
Ex.2
("1:2","5:90","7:12","1:70","29:60","1:5")
becomes
("1:77","5:90","7:12","29:60").
<?php
$arr = array("1:2","5:90","7:12", "1:70","29:60");
$newArr = array();
foreach($arr as $key => $value) {
list($id, $quantity) = explode(':', $value);
if(isset($newArr[$id]))
$newArr[$id] += $quantity;
else
$newArr[$id] = $quantity;
}
foreach($newArr as $key => $value) {
$newArr[$key] = "$key:$value";
}
print_r($newArr);
Simple step by step:
$arr = array("1:2","5:90","7:12","1:70","29:60");
$tmp = array();
foreach($arr as $item)
{
list($id, $value) = explode(':', $item);
if (isset($tmp[$id]))
$tmp[$id] += $value;
else
$tmp[$id] = $value;
}
$arr = array();
foreach($tmp as $id => $value)
array_push($arr, $id . ':' . $value);
var_dump($arr);
Assuming the data format is an actual array, or you can parse it into one:
$data = array("1:2","5:90","7:12","1:70","29:60","1:5");
$values = array();
foreach ($data as $value) {
list($id, $qty) = explode(':', $value);
if (isset($values[$id])) {
$values[$id] += $qty;
} else {
$values[$id] = $qty;
}
}
foreach ($values as $id => &$qty) {
$qty = "$id:$qty";
}
$values = array_values($values);
Try to do like this
$array = array("1:2","5:90","7:12","1:70","29:60","1:5");
$result = array();
$sum = array();
foreach($array as $value)
{
list($k,$v) = explode(':',$value);
$sum[$k] += $v;
$result[$k] = $k.':'.$sum[$k];
}
unset($sum);
print_r($result);