How to get all values between two array values in php? - php

Question

How can I find all values between two array items (including start and end value)?
Example:
array('3X' => '3X','EX'=> 'EX','VG'=>'VG','G'=>'G','F'=>'F','P'=>'P')
Input: $arr, 'EX', 'F'
Output: 'EX', 'VG', 'G', 'F'
Thanks in advance..

Answer 1

$array = array('3X' => '3X','EX'=> 'EX','VG'=>'VG','G'=>'G','F'=>'F','P'=>'P');
$start = "3X";
$end ="F";
$new_array = [];
$i=0;$go=false;
foreach ($array as $element) {
if($go){
$new_array[$i] = $element;
$i++;
}
if($element==$start){
$go = true;
}
if($element==$end){
$go = false;
}
}
$total_elems_new = count($new_array);
unset($new_array[$total_elems_new-1]);
print_r($new_array);
Testeed on PHP 5.6

Answer 2

Try:
$arr = array('3X' => '3X','EX'=> 'EX','VG'=>'VG','G'=>'G','F'=>'F','P'=>'P');
function findValuesBetweenTwoItems($arr, $start, $end) {
$result = [];
$has_started = false;
foreach ( $arr as $item->$value ) {
if( ( $item != $end && $has_started ) || $item == $start) {
array_push($result, $value);
$has_started = true;
}
if( $item == $end ) {
array_push($result, $value);
return $result;
}
}
$my_values = findValuesBetweenTwoItems($arr, 'EX', 'F');
var_dump($my_values);

Answer 3

Try this:
$array = array('3X' => '3X','EX'=> 'EX','VG'=>'VG','G'=>'G','F'=>'F','P'=>'P');
$arrayKeys = array_keys($array);
$input1 = '3X';
$input2 = 'F';
if(in_array($input1,$array) && in_array($input2,$array)) {
if (array_search($input1, array_keys($array)) >= 0) {
if (array_search($input2, array_keys($array)) >= 0) {
if (array_search($input1, array_keys($array)) < array_search($input2, array_keys($array))) {
echo "Keys in between: ";
for ($i = array_search($input1, array_keys($array)); $i <= array_search($input2, array_keys($array)); $i++) {
echo $array[$arrayKeys[$i]] . ", ";
}
} else {
echo "Keys in between: ";
for ($i = array_search($input2, array_keys($array)); $i <= array_search($input1, array_keys($array)); $i++) {
echo $array[$arrayKeys[$i]] . ", ";
}
}
} else {
echo "Value not found!";
}
} else {
echo "Value not found!";
}
} else{
echo "Value not found!";
}

Answer 4

$from = 'EX';
$to = 'F';
$result = null;
$state = 0;
foreach ($a as $k => $v) {
if (($state == 0 && $from === $v) || ($state == 1 && $to === $v))
$state++;
if ($state && $state < 3)
$result[$k] = $v;
elseif ($state >= 2)
break;
}
if ($state != 2)
$result = null;
The loop searches for the first occurrence of $from, if $state is 0 (initial value), or the first occurrence of $to, if $state is 1. For other values of $state, the loop stops processing.
When either $from, or $to is found, $state is incremented. The values are stored into $result while $state is either 1 ($from is found), or 2 ($to is found).
Thus, $state == 2 means that both values are found, and $result contains the values from the $a array between $from and $to. Otherwise, $result is assigned to null.