is it possible that, get arrays to $value with key:
Example:
$array = Array("one"=>Array("field1"=>"value1","field2"=>"value2"),
"two"=>Array("field3"=>"value3","field4"=>"value4"));
Export arrays to value:
$first = any_main_php_function_name(0,$array);
$second = any_main_php_function_name(1,$array);
Result:
$first = Array("field1"=>"value1","field2"=>"value2");
$second = Array("field3"=>"value3","field4"=>"value4");
Basically, I wanna extract multiple array. If there is no such function (any_main_php_function_name) in PHP so How can i extract above $array.
You don't need any funtion to do that. Simply get subarrays like this:
$first = $array['one'];
$second = $array['two'];
Unless you don't know the one,two keys, then you can use array_shift to get first item (one subarray). Remember that this functions also removes returned value from root array.
array_slice does what you want
$first = array_slice($array, 0, 1);
$second = array_slice($array, 1, 1);
print_r($first);
print_r($second);
May be you can array_shift to get the element from array, Like this:
$first_element=array_shift($array);
Make sure it only removes the first element from the array and
return the value of removed element.
And if you don't want to remove the element or get the sub-array in any sequence, then you can create a function like this,
function myFunction($index,$array) {
$keys = array_keys($array);
$sub_array=$arr[$keys[$index]];
}
In above function we just get the keys in a array and then use the known index to get the sub-array using keys array.
Please check this
foreach($array["one"] as $key=>$val){
echo "key=>".$key." Values=>".$val;
}
foreach($array["true"] as $key=>$val){
echo "key=>".$key." Values=>".$val;
}
Related
A certain php array give me this :
myarray{
0=>array { "key_01"=>"value_01", "key_02"=>"value_02"..."key_0n"=>"value_0n"}
1=>array { "key_11"=>"value_11", "key_12"=>"value_12"..."key_1n"=>"value_1n"}
.
.
.
n=>array { "key_n1"=>"value_n1", "key_n2"=>"value_n2"..."key_nn"=>"value_nn"}
}
And i would like to get this one array:
$newarray = {value_01,value_11,value_n1......value_nn}
You can get the first value of each sub-array with current or reset:
$newarray = array_map('current', $array);
If you need a certain offset (in this case the first) then get the values from each array re-indexed with integers and then extract column 0:
$newarray = array_column(array_map('array_values', $array), 0);
You can use array_map to get what you want on each item of your array :
$array = array_map(function ($item) { return current($item); }, $array);
In your case, this seems to be the first value of the item, so you use current.
Reference : https://www.php.net/manual/function.array-map.php
// Loop through your original array
foreach($myarray as $array){
// ensures that the keys are in alphabetical/numerical order
ksort($array);
// add the first value into your new array
$newarray[] = reset($array);
}
if I give you:
$array = array(object1, object2, object3, object4);
and say, at position 2, remove all elements before this position so the end result is:
$array = array(object3, object4);
What would I do? I was looking at array_shift and array_splice to achieve what I wanted - how ever I am not sure which to use or how to use them to achieve the desired affect.
Use array_slice. For more detail check link http://php.net/manual/en/function.array-slice.php
$array = array(object1, object2, object3, object4);
$array = array_slice($array,2); // 2 is position
Or if you are looking into the values instead of the index, with a tiny adjustment in #Ashwani's answer you can have:
$array = array('object1', 'object2', 'object3', 'object4');
$slice = array_slice($array, array_search('object3',$array));
array_slice is one way to go about it, however, if you are wanting to remove all the elements in an any array before a specific value, without searching, then:
//assuming you've already verified the match is in the array
//make a copy of $array first if you don't want to break the original
while($array[0] !== $match) {
array_shift(&$array);
}
Alternatively, you could:
$index = array_search($match, array_values($array));
if($index !== false) $array = array_slice($array, $index);
This accomplished both the verification and slice. Note the array_values() is used to account for associative arrays.
I have an array like this:
array(13,4,7,1,16);
I want to recount the array, but I want to keep the sequence, like this:
array(4,2,3,1,5);
How can I do this?
If you are trying to sort the array, keeping the keys in the same order as the values, the PHP asort() function does that.
If you want to keep the original array but get the keys in sort order, then you can use something like:
$arr = array(13,4,7,1,16);
asort($arr);
$keys = array_keys($arr);
Then $keys has the keys from the original array sorted in the order of the original values, e.g. $keys = array(4,2,3,1,5);
if you want to get the index of the array with reference to the sorted values
Try this
$numbers = array(13,4,7,1,16);
$numberscopy = $numbers;
sort($numberscopy);
$final = array();
//echo array_search(13, $numbers);
for($a=0 ; $a<count($numberscopy );$a++){
$final[] = array_search($numberscopy[$a], $numbers) + 1;
}
var_dump($final);
I have an array on which I did array_count_values, and then an arsort.
$a example: $a = array('ten','ten','ten','three','two',one','ten','four','four');
I want to get the first element, and tried $a[0] but this did not work.
What is the correct syntax to get the first element please?
EDIT - added array
EDIT2 - Also, underlying array not allowed to be changed because their is code following that uses the associative array...
depending on whether or not you want to alter the array, you can use array_slice() or array_shift()
you can use array_values as
$a = array_values($a);
var_dump($a[0])
Same as in your last question.
key($a); // or each() for the first key=>value pair
Or alternatively:
$k = array_keys($a);
print $k[0];
ok I used this:
$a = array('ten','ten','ten','three','two','one','ten','four','four');
$bb= array_count_values ($a);
arsort($bb);
echo reset($bb);
It only works for getting the first element...Thank you all.
These are the ways of getting the first element:
$next = $arr[0];
$next = array_shift($arr);
$next = current($arr); // if the internal cursor is at position 0
What is the fastest and easiest way to get the last item of an array whether be indexed array , associative array or multi-dimensional array?
$myArray = array( 5, 4, 3, 2, 1 );
echo end($myArray);
prints "1"
array_pop()
It removes the element from the end of the array. If you need to keep the array in tact, you could use this and then append the value back to the end of the array. $array[] = $popped_val
try this:
$arrayname[count(arrayname)-1]
I would say array_pop In the documentation: array_pop
array_pop — Pop the element off the end of array
Lots of great answers. Consider writing a function if you're doing this more than once:
function array_top(&$array) {
$top = end($array);
reset($array); // Optional
return $top;
}
Alternatively, depending on your temper:
function array_top(&$array) {
$top = array_pop($array);
$array[] = $top; // Push top item back on top
return $top;
}
($array[] = ... is preferred to array_push(), cf. the docs.)
For an associative array:
$a= array('hi'=> 'there', 'ok'=> 'then');
list($k, $v) = array(end(array_keys($a)), end($a));
var_dump($k);
var_dump($v);
Edit: should also work for numeric index arrays