Gaurav Agarwal Q&A Hub - Recent questions and answers

Answered: Write a php program to find the difference between two arrays.

Tue, 18 Jun 2024 02:43:28 +0000

<?php

$array1 = array(1, 2, 3, 4, 5);

$array2 = array(4, 5, 6, 7, 8);

$difference = array_diff($array1, $array2);

print_r($difference);

?>

Answered: Write a php program to chunk an array into smaller arrays of a specified size.

Tue, 18 Jun 2024 02:40:48 +0000

<?php

$array = range(1, 10);

$chunks = array_chunk($array, 3);

print_r($chunks);

Answered: Write a php program to extract a column from a multidimensional array.

Tue, 18 Jun 2024 02:40:24 +0000

<?php

$array = array(

array('id' => 1, 'name' => 'John'),

array('id' => 2, 'name' => 'Jane'),

array('id' => 3, 'name' => 'Doe'),

);

$names = array_column($array, 'name');

print_r($names);

Answered: Write a php program to flatten a multidimensional array.

Tue, 18 Jun 2024 02:40:02 +0000

<?php

function array_flatten($array) {

$result = array();

foreach ($array as $value) {

if (is_array($value)) {

$result = array_merge($result, array_flatten($value));

} else {

$result[] = $value;

}

return $result;

}

$array = array(1, array(2, 3), array(4, array(5, 6)));

$flattened = array_flatten($array);

print_r($flattened);

Answered: Write a php program to reduce an array to a single value using a callback function.

Tue, 18 Jun 2024 02:39:30 +0000

<?php

$array = array(1, 2, 3, 4, 5);

$sum = array_reduce($array, function($carry, $item) {

return $carry + $item;

}, 0);

echo "Sum: " . $sum;

Answered: Write a php program to apply a callback function to all elements of an array.

Tue, 18 Jun 2024 02:37:43 +0000

<?php

$array = array(1, 2, 3, 4, 5);

$squaredArray = array_map(function($value) {

return $value * $value;

}, $array);

print_r($squaredArray);

Answered: Write a php program to find the intersection of two arrays.

Tue, 18 Jun 2024 02:36:55 +0000

<?php

$array1 = array(1, 2, 3, 4, 5);

$array2 = array(4, 5, 6, 7, 8);

$intersection = array_intersect($array1, $array2);

print_r($intersection);

Answered: Write a php program to convert an array to a comma-separated string and back to an array.

Tue, 18 Jun 2024 02:36:30 +0000

<?php

$array = array('apple', 'banana', 'cherry');

$string = implode(', ', $array);

echo "String: " . $string . "\n";

$newArray = explode(', ', $string);

print_r($newArray);

Answered: Write a php program to sort a multidimensional array by one of its subarray values.

Tue, 18 Jun 2024 02:36:08 +0000

<?php

$array = array(

array('name' => 'John', 'age' => 28),

array('name' => 'Jane', 'age' => 22),

array('name' => 'Doe', 'age' => 25),

);

usort($array, function($a, $b) {

return $a['age'] <=> $b['age'];

});

print_r($array);

Answered: Write a php program to count the frequency of each element in an array.

Tue, 18 Jun 2024 02:35:43 +0000

<?php

$arr = array(1, 2, 2, 3, 3, 3, 4, 4, 4, 4);

$frequency = array_count_values($arr);

print_r($frequency);

Answered: Write a php program to split an array into chunks of 2 elements each.

Tue, 18 Jun 2024 01:22:00 +0000

<?php

$arr = array(1, 2, 3, 4, 5, 6);

$chunks = array_chunk($arr, 2);

print_r($chunks);

Answered: Write a php program to search for a specific element in an array.

Tue, 18 Jun 2024 01:21:35 +0000

<?php

$arr = array(1, 2, 3, 4, 5);

$search = 3;

if (in_array($search, $arr)) {

echo $search . " found in array";

} else {

echo $search . " not found in array";

}

Answered: Write a php program to reverse the elements of an array.

Tue, 18 Jun 2024 01:08:36 +0000

<?php

$arr = array(1, 2, 3, 4, 5);

$reversed = array_reverse($arr);

print_r($reversed);

Answered: Write a php program to find the sum of all elements in an array.

Tue, 18 Jun 2024 01:08:07 +0000

<?php

$arr = array(1, 2, 3, 4, 5);

$sum = array_sum($arr);

echo "Sum: " . $sum;

Answered: Write a php program to remove duplicate elements from an array.

Tue, 18 Jun 2024 01:07:26 +0000

<?php

$arr = array(1, 2, 2, 3, 4, 4, 5);

$uniqueArr = array_unique($arr);

print_r($uniqueArr);

Answered: Write a php program to merge two arrays into one.

Tue, 18 Jun 2024 01:06:55 +0000

<?php

$arr1 = array(1, 2, 3);

$arr2 = array(4, 5, 6);

$merged = array_merge($arr1, $arr2);

print_r($merged);

Answered: Write a PHP program to sort an array in ascending and descending order.

Tue, 18 Jun 2024 01:03:24 +0000

<?php

$arr = array(5, 1, 9, 2, 8);

sort($arr);

echo "Ascending Order: ";

print_r($arr);

rsort($arr);

echo "Descending Order: ";

print_r($arr);

Answered: Write a PHP program to find the maximum and minimum elements in an array.

Tue, 18 Jun 2024 00:47:31 +0000

<?php

$arr = array(5, 1, 9, 2, 8);

echo "Maximum: " . max($arr) . "\n";

echo "Minimum: " . min($arr) . "\n";

Answered: Write a PHP program to initialize an array with 5 integers and print each element.

Tue, 18 Jun 2024 00:46:44 +0000

<?php

$arr = array(10, 20, 30, 40, 50);

foreach ($arr as $value) {

echo $value . "\n";

}

?>