I have two arrays like this
array x [Firefox,IE,Chrome,Opera]
array y [40,30,25,5]
Required final [[Firefox,40],[IE,30],[Chrome,25],[Opera,5]]
I need this in PHP.I think I can run a for loop and do something like this .
final23 [0][i] = x[i];
final23 [1][i] = y[i];
Is there any better way or built in function in PHP ?
$result = array();
$size = max(count($x), count($y));
for ($i = 0; $i < $size; $i++) {
$result[] = array(
isset($x[$i]) ? $x[$i] : null,
isset($y[$i]) ? $y[$i] : null
);
}
$x = array("Mozzila","IE","Firefox","Opera");
$y = array(40,30,25,5);
$final = array();
$i = 0;
foreach($x as $a){
$final[] = array($a,$y[$i]);
$i++;
}
Learn about Associated array.
$arr = new Array("40"=>"FireFox","30"=>"IE","25"=>"Chrome","5"=>"Opera");
Related
I am in too much trouble. I need below type of array:-
$val = "abc";
$arr1["besk"] = $val
$arr2["besk"] = $val
.
.
$arr15["besk"] = $val
I tried below:-
for($i = 1; $i<16; $i++)
{
$arr.$i["besk"] = $val
}
here I've $val. so not to worry on that. But array is not properly creating. Any help would be appreciated.
first define the array as string
like
$arr = 'arr';
then use the foreach
like
for($i = 1; $i<16; $i++)
{
${$arr.$i}["besk"] = $val;
}
You need to use variable variables (not recommended)
for($i = 1; $i<16; $i++)
{
${"arr".$i}["besk"] = $val
}
EDIT : #CBroe is right about his comment, you should use an array instead. So the best solution would be to create a two dimensional array like so :
$arr = [];
for($i = 0; $i<15; $i++)
{
$arr[$i]["besk"] = $val
}
The only difference is your array indexes start from 0 now and if you want to have the third value of your array you need this command $arr[2]["besk"]
it is very simple use this:
for($i = 1; $i<16; $i++)
{
${$arr.$i}["besk"] = $val
}
Use this approach:
for($i = 1; $i<16; $i++)
{
${$arr.$i}["besk"] = $val;
}
add new variable
$val = "abc";
$arrName = "arr"; //this one
$arr1["besk"] = $val
$arr2["besk"] = $val
.
.
$arr15["besk"] = $val
and to call it
for($i = 1; $i<16; $i++)
{
${$arrName.$i}["besk"] = $val
}
ps. you did not create array, you just create 15 array variable with 1 index("besk" index)
I was wondering if it is possible to create unique variables in a for loop using PHP. I tried the following code but it didn't work:
$level_count = 6
for ($i=1; $i<=$level_count; $i++) {
$level_ + $i = array();
}
I would like to end up with the variables $level_1, $level_2, $level_3, $level_4, $level_5 and $level_6. How would I achieve this?
$level_count = 6
for ($i=1; $i<=$level_count; $i++) {
$l = "level" . $i;
$$l = array();
}
But Zerkms is right...
$arr = array(array(),array(),array(),array(),array(),array());
It's much easier if you use arrays for this. Try this one-liner:
$level_count = 6;
$array = array_fill_keys(array_map(function($index) {
return 'level_' . $index;
}, range(1, $level_count)), array());
var_dump($array);
Weird thing (I have no idea why you want to use it), but, just for educational purposes...
$level_count = 6;
for ($i = 1; $i <= $level_count; $i++) {
$name = 'level_' . $i;
$$name = array();
}
How to create array from variable php using loop for ?
i have many variable php like
$number_0 = 1;
$number_1 = 2;
$number_2 = 5;
$number_3 = 2;
$number_4 = 6;
i want to create array like this
$ar = array('1','2','5','2','6');
but using loop for like
for ($i=0;$i<5;$i++)
{
$number."_".$i ====> to array
}
Not a recomended way of doing things but:
$arr = array();
for($i=0;$i<5;$i++) {
$varName = 'number_'.$i;
$arr[] = $$varName;
}
for ($i = 1; $i <= 6; $i++)
$ar[] = $i;
for ($i=1;$i<7;$i++)
{
$ar[] = $i;
}
Ive got 2 arrays, first one contains values of objects, and second one contains their IDs.
In this form:
$values[0] applies to $ids[0]
$values[1] applies to $ids[1]
I need to sort first array (using sort() ) from lowest to highest (values are ints) - That's not problem.
Problem is, that When I sort array with values, I will lost ID of that value.
My question is: How to make that
If $values[0] turns to $values[5], automatically turn $ids[0] to $ids[5]
Thanks
Update:
Content of $values and $ids:
$values[0] = 1.5;
$values[1] = 2.4;
$values[2] = 15.7;
$values[3] = 11.7;
$values[4] = 4.8;
$values[5] = 0.4;
$ids[0] = 1;
$ids[1] = 2;
$ids[2] = 3;
$ids[3] = 4;
$ids[4] = 5;
$ids[5] = 6;
Combine the arrays first, then sort by key:
$newArr = array_combine($ids, $values);
ksort($newArr);
It sounds like you're looking for array_combine():
Example
<?php
$ids = array(2, 1, 3); // IDs
$values = array(a, b, c); // Values
$array = array_combine($ids, $values); // Combine arrays as ID => Value
ksort($arrays); // Sort new array
print_r($array); // Echo array
Output
Array
(
1 => b,
2 => a,
3 => c,
)
Follow the code below... have not tested it ... but it must work.... Easy to understand..
<?php
$count = count($values);
for($i = 0; $i<$count; $i++)
{
if($i == 0)
{
$sort1 = $values[$i];
$sort2 = $ids[$i];
$temp = 0;
}
if($sort1 > $values[$i])
{
$sort1 = $values[$i];
$sort2 = $ids[$i];
$temp_val = $values[$temp];
$temp_id = $ids[$temp];
$values['temp'] = $values[$i];
$ids['temp'] = $ids[$i];
$temp = $i;
$values[$i] = $temp_val;
$ids[$i] = $temp_id;
}
}
?>
For example:
$size = 0;
$array = $array;
$size = 1;
$array = $array[x];
$size = 5;
$array = $array[x][x][x][x][x];
I got a $config array that can either have 1 dimension or many. Depending on setting of the var $size the elements I need walk gonna be on that position. If size = 1, I will be looking for $config[1]. If size = 2 I will be looking for $config[1][1] ...
Thanks,
$foo = $array;
for($i=0;$i<$size;++$i) {
$foo = $foo[x];
}
$array = $array[x][x][x][x][x];
for ($x = 0; $x < 5; $x++) {
if (!is_array($array[1])) break;
$array = $array[1];
}
You can make infinite loop and reach end of array.