$abc=array(1,2,3,4,5,6,7,8);
$xyz=array(a,b,c,d,e,f);
I want to retrieve data from above two arrays in a desired format (Actually those arrays are generated from database tables). The data will be displayed in html TABLE. I have used PHP MYSQL. The values may not be in a sequence as of example been displayed, but there is two distinct arrays. To make it more clear I want to say that the odd columns (starting from first column) will display the values of array abc and even will display the values of array xyz.
Please help me out. Thanks in advance.
This is a really interesting question. I think I found a solution.
function table (array $array1, array $array2, $splitIndex)
{
$rows = array ();
$currentRow = 0;
// Make sure $array1 is the bigger of them
if (count ($array2) > count ($array1))
{
$arrayTemp = $array2;
$array2 = $array1;
$array1 = $arrayTemp;
}
// Loop over each element of the array
foreach ($array1 as $index => $arrayValue)
{
$rows [$currentRow] [] = $arrayValue;
if (isset ($array2 [$index]))
$rows [$currentRow] [] = $array2 [$index];
else
$rows [$currentRow] [] = '';
$currentRow = ($currentRow == $splitIndex ? 0 : $currentRow + 1);
}
$output = '<table>';
// Loop over the rows
foreach ($rows as $row)
{
$subOutput = '<tr>';
// Loop over the columns in the rows
foreach ($row as $element)
$subOutput .='<td>'. $element .'</td>';
$output .= $subOutput .'</tr>';
}
// Return the output altogether.
return $output .'</table>';
}
Now you can use:
echo table ([ 'i', 'b', 'a', 'e', 'b' ], ['1', '2', '3'], 2);
The 2 indicates that it will split on every two rows, like it was 3 in your example.
Related
I have 2 SELECT statement in my PHP. Both the select statements fetch data from two different DB. The fetched data is saved in PDO Assoc Array. The problem is when I want to compare those two arrays to find that if the column 'id' exist in both arrays or not. If it exists then ignore it. If it's a unique id then save it into a third array. But I found some problems in my Logic Below
And after running the below code I am getting a couple of error:
1: Array to string conversion
2: duplicate key value violates unique constraint
$arr1 = $msql->fetchAll(PDO::FETCH_ASSOC);
$array1 = array();
foreach($arr1 as $x){
$array1[] = $x['id'];
}
$arr2 = $psql->fetechAll(PDO::FETCH_ASSOC);
$array2 = array();
foreach($arr2 as $y){
$array2[] = $y['id'];
}
$finalarray = array();
for ($i = 0; $i < count($arr1); $i++){
if(count(array_intersect($array1,$array2)) <= 1){// is the count of id is 1 or less save that whole row in the $finalarray
$finalarray = $arr1[$i]; // saving the unique row.
}
else{
continue;
}
}
All I am trying to get the unique row of data array() after comparing their id column.
You can use in_array() function as both arrays are index array.
$finalarray = array();
for ($i = 0; $i < count($arr1); $i++){
if(count(array_intersect($array1,$array2)) <= 1){// is the count of id is 1 or less save that whole row in the $finalarray
$finalarray = $arr1[$i]; // saving the unique row.
}
else{
continue;
}
}
make change in code:
$finalarray = array();
for ($i = 0; $i < count($arr1); $i++){
if(!in_array($array1[$i], $array2)){
$finalarray[] = $array1[$i]; // saving the unique row.
}
}
You can simply use array_intersect() to get common values between two array. for difference, can use array_diff()
$array1 = [1,2,3,4,5,6,7];
$array2 = [2,4,6];
//array_intersect — Computes the intersection of arrays
$result = array_intersect($array1, $array2);
print_r($result);
//array_diff — Computes the difference of arrays
$result = array_diff($array1, $array2);
print_r($result);
DEMO
Rather than using 3 different arrays to get unique ids, you can do it by using one array. Make changes to your code as below:
$finalarray = array();
$arr1 = $msql->fetchAll(PDO::FETCH_ASSOC);
foreach($arr1 as $x){
if (!in_array($x['id'],$finalarray)) { // check id is already stored or not
$finalarray[] = $x['id'];
}
}
$arr2 = $psql->fetechAll(PDO::FETCH_ASSOC);
foreach($arr2 as $y){
if (!in_array($y['id'],$finalarray)) { // check id is already stored or not
$finalarray[] = $y['id'];
}
}
Maybe you should make sure which array is larger before your loop ;
Or using array_diff:
$finalarray = array_diff($array1 , $array2) ?? [];
$finalarray = array_merge( array_diff($array2 , $array1) ?? [], $finalarray );
I'm probably just overlooking the obvious but I'd like to blame it on the fact that I'm new to PHP.
I have some number of arrays being returned with similar information but differing amounts of it.
I'll put some example arrays below:
(t1-s1-1=1, t1-s1-2=1, t1-s2-1=1, t1-s2-2=1)
(t2-s1-1=1, t2-s2-1=2, t2-s2-2=1)
(t3-s1-1=1, t3-s2-1=1, t3-s3-1=1, t3-s3-2=3)
So I would like to make a table out of this information. Something like this:
test .. s1-1 .. s1-2 .. s2-1 .. s2-2 .. s3-1 .. s3-2
t1 ........1 .....1 ..........1 ....... 1.........1..........1
t2 ........1 .......X..........1..........1........1..........1
t3 ........1 .......X..........1..........X........1..........1
( where x is something that wasn't there. )
So every array has an s1 but could have s1-1, s1-2, s1-3 or simply s1-1. That creates very different sized arrays.
The problem is that each array can have wildly different information and because they are Indexed arrays instead of Associative arrays I'm not sure how to best equalize them. I can't consistently say index 3 is s1-3 or something else.
I can't just loop through manually because I never know where a gap will appear. I can't look for specific indexes because the arrays aren't associative so the titles are built into the value and I don't know how to access them separately.
Any good ideas out there that maybe a newbie is overlooking? I'm open to non-tabular display ideas as well as long as I can easily sort and display the information.
Thanks
I'm assuming your original arrays contain values as string, so for instance, in PHP syntax, they look like:
['t1-s1-1=1', 't1-s1-2=1', 't1-s2-1=1', 't1-s2-2=1']
Basically, you should create a bi-dimensional array:
go through all arrays and by using a regex extract the different parts, that is, for the first element in the array above: t1 (the index for the first level in the bi-dimensional array), s1-1 (the index for the second level in the bi-dimensional array) and the value 1
insert the value in the bi-dimensional array
keep in a separate array, let's call it allColumns every second index above (sx-y), even you will have duplicate values you can, at the end, delete those duplicate and order it alphabetically
After that, you will have all the value in the bi-dimensional array but you still miss the gaps, so what you can do it iterate over the bi-dimensional array, and for every dimension tz (t1, t2,...), go through for all the values stored in allColumns and if you don't find the entry for that sx-y in the bi-dimensional array for that tz, add it with value x (or probably with value = 0)
I think an example can clarify the above:
// arrays of arrays, I don't know how you receive the data
$arrays = [
['t1-s1-1=1', 't1-s1-2=1', 't1-s2-1=1', 't1-s2-2=1'],
['t2-s1-1=1', 't2-s2-1=2', 't2-s2-2=1'],
['t3-s1-1=1', 't3-s2-1=1', 't3-s3-1=1', 't3-s3-2=3']
];
// bi-dimensional array
$output = [];
// it will store all columns you find in the $arrays entry
$allColumns = [];
// iterate for every array you receive, i.e. ['t1-s1-1=1', 't1-s1-2=1', 't1-s2-1=1', 't1-s2-2=1']
foreach ($arrays as $array) {
// iterate over every element in the array: 't1-s1-1=1', 't1-s1-2=1', 't1-s2-1=1' and 't1-s2-2=1'
foreach ($array as $item) {
// extract the parts on every element: $matches is an array containing the different parts
preg_match('/^(t\d+)-(s\d+-\d+)=(\d+)/', $item, $matches);
/**
* $matches[0] would contains the element if matched: 't1-s1-1=1'
* $matches[1] would contains 't1' if matched
* $matches[2] would contains 's1-1' if matched
* $matches[2] would contains 1 (integer) if matched
*/
if (!empty($matches)) {
$output[$matches[1]][$matches[2]] = $matches[3];
$allColumns[] = $matches[2];
}
}
}
// clean duplicates
$allColumns = array_unique($allColumns);
// sort values alphabetically
sort($allColumns);
// iterate over the just created bi-dimensional array
foreach ($output as $row => $columns) {
// iterate for all columns collected before
foreach ($allColumns as $column) {
// if one of column in 'allColumns' doesn't exit in $output you added in the correct place adding a zero value
if (!in_array($column, array_keys($columns))) {
$output[$row][$column] = 0;
}
}
}
To print the output you should only iterate over $ouput
This will be the array internally:
(
[t1] => Array
(
[s1-1] => 1
[s1-2] => 1
[s2-1] => 1
[s2-2] => 1
[s3-1] => 0
[s3-2] => 0
)
[t2] => Array
(
[s1-1] => 1
[s2-1] => 2
[s2-2] => 1
[s1-2] => 0
[s3-1] => 0
[s3-2] => 0
)
[t3] => Array
(
[s1-1] => 1
[s2-1] => 1
[s3-1] => 1
[s3-2] => 3
[s1-2] => 0
[s2-2] => 0
)
)
It exists other ways to implement the above, like skip the step where you fill the gaps and do it on the fly, ...
Updated
The simplest way to display the results in a HTML page is by embedding a php script to iterate over the associative array and compose the HTML table (I encourage you to study and research MVC to separate logic from the view)
<!DOCTYPE html>
<?php
// arrays of arrays, I don't know how you receive the data
$arrays = [
['t1-s1-1=1', 't1-s1-2=1', 't1-s2-1=1', 't1-s2-2=1'],
['t2-s1-1=1', 't2-s2-1=2', 't2-s2-2=1'],
['t3-s1-1=1', 't3-s2-1=1', 't3-s3-1=1', 't3-s3-2=3']
];
// bi-dimensional array
$output = [];
// it will store all columns you find in the $arrays entry
$allColumns = [];
// iterate for every array you receive, i.e. ['t1-s1-1=1', 't1-s1-2=1', 't1-s2-1=1', 't1-s2-2=1']
foreach ($arrays as $array) {
// iterate over every element in the array: 't1-s1-1=1', 't1-s1-2=1', 't1-s2-1=1' and 't1-s2-2=1'
foreach ($array as $item) {
// extract the parts on every element: $matches is an array containing the different parts
preg_match('/^(t\d+)-(s\d+-\d+)=(\d+)/', $item, $matches);
/**
* $matches[0] would contains the element if matched: 't1-s1-1=1'
* $matches[1] would contains 't1' if matched
* $matches[2] would contains 's1-1' if matched
* $matches[2] would contains 1 (integer) if matched
*/
if (!empty($matches)) {
$output[$matches[1]][$matches[2]] = $matches[3];
$allColumns[] = $matches[2];
}
}
}
// clean duplicates
$allColumns = array_unique($allColumns);
// sort values alphabetically
sort($allColumns);
// iterate over the just created bi-dimensional array
foreach ($output as $row => $columns) {
// iterate for all columns collected before
foreach ($allColumns as $column) {
// if one of column in 'allColumns' doesn't exit in $output you added in the correct place adding a zero value
if (!in_array($column, array_keys($columns))) {
$output[$row][$column] = 0;
}
}
}
?>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Table Page</title>
</head>
<body>
<table>
<thead>
<?php
echo '<tr><th>Test</th>';
foreach ($allColumns as $head) {
echo sprintf('<th>%s</th>', $head);
}
echo '</tr>';
?>
</thead>
<tbody>
<?php
foreach ($output as $key => $columns) {
echo sprintf('<tr><td>%s</td>', $key);
foreach ($columns as $column) {
echo sprintf('<td>%s</td>', $column);
}
echo '</tr>';
}
?>
</tbody>
</table>
</body>
</html>
Try the following:
$final_array = array();
$temp_array = array();
foreach ($t1 as $t) {
$isin = 0;
$expression = substr($t, 0, strpos($t, "="));
$expression = str_replace("t1-", "" , $expression)
$value = substr($t, strpos($t, "=") + 1);
for ($i = 0; $i < 3; $i++) {
foreach ($x = 0; $x < 3; $x++) {
if ($expression == "s{$i}-{$x}") {
$isin = 1;
array_push($temp_array, $value);
}
}
}
if ($isin == 0) { array_push($temp_array, "X"); }
}
array_push($final_array, $temp_array);
It's not a great solution because you're choosing to do this in a really odd way but you should see the gist of what how to get what you want from this example.
I have 4 arrays, each one holds another column of a table, I would like to create one array with the data ordered per array[$i]. All arrays have the same number of values: $namesArr, $folderArr, $updatedAt, $valuesArr .
I would like my new array to be contain:
$namesArr[0], $folderArr[0], $updatedAt[0], $valuesArr[0],
$namesArr[1], $folderArr[1], $updatedAt[1], $valuesArr[1],
$namesArr[2], $folderArr[2], $updatedAt[2], $valuesArr[2],
...
I guess the solution is pretty simple, but I got stuck :(
Can anyone help?
I would do something like:
$arr = array_map(function () { return func_get_args(); },$namesArr, $folderArr, $updatedAt, $valuesArr);
You can use foreach loop to merge 4 arrays:
foreach ($namesArr as $key => $value) {
$arr[$key][] = $value;
$arr[$key][] = $folderArr[$key];
$arr[$key][] = $updatedAt[$key];
$arr[$key][] = $valuesArr[$key];
}
Thus $arr will be the merged array
<?php
$newArr = array();
for ($i = 0; $i < count($namesArr); $i++)
{
$newArr[$i][0] = $namesArr[$i];
$newArr[$i][1] = $folderArr[$i];
$newArr[$i][2] = $updatedAt[$i];
$newArr[$i][3] = $valuesArr[$i];
}
?>
Explanation
What this will do is iterate depending on how many elements there are in $namesArr.
I utilised a multidimensional array here so that the first set of square brackets is effectively the "row" in a table, and the second set of square brackets are the "column" of a table.
do the following way:
while($db->query($sql)){
$namesArr[] =$db->f('names');
$folderArr[]=$db->f('folder');
$updatedAt[]=$db->f('updated');
$valuesArr[]=$db->f('values');
}
Here I am Having an Issue:
I have two arrays like the following:
$array1 = array('1','2','1','3','1');
$array2 = array('1','2','3'); // Unique $array1 values
with array2 values i need all keys of an array1
Expected Output Is:
1 => 0,2,4
2 => 1
3 => 3
here it indicates array2 value =>array1 keys
Just use a loop:
$result = array();
foreach ($array1 as $index => $value) {
$result[$value][] = $index;
}
If you pass array_keys a 2nd parameter, it'll give you all the keys with that value.
So, just loop through $array2 and get the keys from $array1.
$result = array();
foreach($array2 as $val){
$result[$val] = array_keys($array1, $val);
}
The following code will do the job. It will create a result array in which the attribute val will contain the value that is searched in array and keys attribute will be an array that contains the found keys. Based on your values following is an example:
$array1 =array('1','2','1','3','1');
$array2 =array('1','2','3');
$results = array();
foreach ($array2 as $key2=>$val2) {
$result = array();
foreach ($array1 as $key1=>$val1 ) {
if ($val2 == $val1) {
array_push($result,$key1);
}
}
array_push($results,array("val"=>$val2,keys=>$result ));
}
echo json_encode($results);
The result will be:
[{"val":"1","keys":[0,2,4]},
{"val":"2","keys":[1]},
{"val":"3","keys":[3]}]
I have two arrays:
$array1 = array(1=>1,10=>1,12=>0,13=>13);
$array2 = array(1=>"Hello",10=>"Test",12=>"check",13=>"error");
Here $array1 has keys and values. Now I want to take the first value from $array1(as 1) and I want to check if this is repeated in this array .
Here 1 is repeated two times so I want to take the two keys 1,10 and display the corresponding values of these keys from $array2. If the value in $array1 is not repeated then I want to just display the value of this key from $array2.
I want to get the output as follows:
Hello Test
check
error
That means in $array1 1,10 keys have the same value so the value of 1 and the value of 10 from $array2 is merged then displayed.
Like 12 has 0 this is not repeated so simply take value of 12 from $array2.
Like 13.
How can I do this?
<?php
$array1 = array(1=>1,10=>1,12=>0,13=>13);
$array2 = array(1=>"Hello",10=>"Test",12=>"check",13=>"error");
$groupedKeys = array();
foreach($array1 as $key=>$arr){
$groupedKeys[$arr][] = $key;
}
foreach($groupedKeys as $key => $groupedKeyArr){
foreach($groupedKeyArr as $groupedKey){
echo $array2[$groupedKey];
}
echo "<br /> ";
}
?>
http://codepad.org/9R9s5lTM
There is a built in function that returns an array with the number of times a value is repeated http://php.net/manual/en/function.array-count-values.php
This is really rough, but a simple way of doing it could be:
<?
$array1 = array(1=>1,10=>1,12=>0,13=>13);
$array2 = array(1=>"Hello",10=>"Test",12=>"check",13=>"error");
$prev = $array1[1];
foreach($array1 as $key => $val)
{
if($val != $prev && $key != 1)
{
echo '<br />';
}
echo $array2[$key].' ';
$prev = $val;
}
?>
Example: http://codepad.org/OpLdtStp
This assumes that you're first key is always going to be 1 by the way.
I am providing you a function returns an array with the number of times a value is repeated in an array(as values) and values as the keys. Further task is not difficult.
function check_number_of_times_elements_occur_in_array($a)//returns values of array as keys, associating values being their total occurences in the array
{
$r=array();
foreach($a as $v)
++$r[$v];
return $r;
}
I think this will do for you..
function test($array1,$array2) {
$repeated_values = array_count_values($array1);
foreach($repeated_values as $key => $value){
if($value > 1) {
foreach($array1 as $key1 => $value1){
if($key == $value1){
$repeated_values_keys[] = $key1;
}
}
}
}
$str_top = "";
foreach($repeated_values_keys as $k){
$str_top .= $array2[$k]." ";
}
echo $str_top.'<br/>';
foreach($array2 as $key2 => $value){
if(!in_array($key2,$repeated_values_keys)){
echo $value.'<br/>';
}
}
}