Sorting array value without using built in php like sort() etc Bubble sort in php <?php $array =array(‘2′,’4′,’8′,’5′,’1′,’7′,’6′,’9′,’10’,’3′); echo ‘Unsorted array’; print_r($array); for($i = 0; $i<count($array); $i++){ for($j = 0; $j <count($array)-1; $j++){ if($array[$j] > $array[$j+1]){ $temp = $array[$j+1]; $array[$j+1] = $array[$j]; $array[$j] = $temp; } } } echo ‘Sorted array’; print_r($array); ?> Reverse Order Sorting <?php $array = array(‘2′,’4′,’8′,’5′,’1′,’7′,’6′,’9′,’10’,’3′); echo ‘Unsorted array’; print_r($array); for($i = 0; $i<count($array); $i++){ for($j = 0; $j <count($array)-1; $j++){…

<?php $input= array(10,101,21,01,11,12,12131,14,115,51,51); $count_values = array(); foreach ($input as $a) { $count_values[$a]++; } echo ‘Duplicates count: ‘.count($count_values); print_r($count_values); ?>

There are many differences between PHP 5 and 7. Some of the main points are: Performance: PHP 7: Performance speed is double. Average requests per second are 44 when it is 22 in php5. PHP 5: Performance is low compared to php7. Return Type: In PHP 5, the programmer is not allowed to define the type of return value of a function which is the major drawback. But in PHP 7, this limitation is overcome…