There are a lot values in $variable which has randomly -ve and +ve values. How can I COUNT max consecutive positive value? for example,
$variable = array:12 [▼
0 => 258300
1 => 668000
2 => -1510530
3 => 15000
4 => 2400
5 => 13400
6 => 284000
7 => -45000000
8 => 7209702
9 => 1000074080
10 => 0
11 => 1100
]
In the above case, Output should look like: 4 has max constructiveness of positive value. because,
3 => 15000
4 => 2400
5 => 13400
6 => 284000
These values has continue +ve value and its max consecutive.
$variable, and determine if it is in positive trend or not. Positive trend means previous and current value are both positive.Try the following code:
// Define a variable which stores the previous value
$prev = null;
$current_positive_trend = array();
$max_consecutive_positive_trends = array();
foreach ($variable as $value) {
/* For PHP 5 you can do the following instead
$prev = isset($prev) ? $prev : $value;
*/
$prev = ($prev ?? $value); // first time consider current value
// if current value and previous value is greater than zero
if ($prev > 0 && $value > 0) {
// add the value to current positive trend
$current_positive_trend[] = $value;
// check if the count of current positive trend array is more than
// the max consecutive positive trends found till now
if (count($current_positive_trend) > count($max_consecutive_positive_trends)) {
// set current trend to max consecutive trends
$max_consecutive_positive_trends = $current_positive_trend;
}
} else {
// not in positive trend - reset
$current_positive_trend = array();
}
}
$max_times_consecutive_positive = count($max_consecutive_positive_trends);
// print the consecutive positive values (in max case
var_dump($max_consecutive_positive_trends);
// print the max times trend was positive.
echo $max_times_consecutive_positive;
Did you want it done with minimal code?
<?
$v = [
258300,
668000,
-1510530,
15000,
2400,
13400,
284000,
7209702,
1000074080,
0,
1100,
45,
-1
];
$m=0;
$c=0;
foreach ($v as $i) {$c=($i>0)?((++$c>$m)?($m=$c):$c):0;};
var_dump($m);
Here is the code. you should optimize the code. i have add some comments that help you for additional changes
you can check your desired output here
<?php
$data=array(258300,668000,-1510530,15000,2400,13400,284000,-45000000,7209702,1000074080,0,1100);
$bak_index=array();
$bak=array();
$index_start=0;
// print_r(count($data));
// exit;
for($i=0;$i<count($data);$i++){
if($data[$i] <=0){
//echo $i.'='.$data[$i].'__'; for testing
$index_end=$i;
$bak_index['start']=$index_start;//get start index
$bak_index['end']=$index_end;//get end index number
$bak_index['total']=$bak_index['end']-$bak_index['start']; //total positive number index
$index_start=$i+1;
$bak[]=$bak_index;
}
}
echo "<pre>";
print_r($bak);//here is array with start index, end index & total positive consecutive value
$max_value=max(array_column($bak, 'total'));
//print_r($max_value);
//now get values from $data varaible using array_slice function
for ($i=0; $i < count($bak) ; $i++) {
if($bak[$i]['total'] == $max_value){
echo $bak[$i]['start'];
echo "_____";
echo $bak[$i]['end'];
echo "<br>";
$value[]= array_slice($data, $bak[$i]['start'], $bak[$i]['total']);
}
}
print_r($value);