PHP Array Exercises : Generate a random password using shuffle() function
PHP Array: Exercise-27 with Solution
Write a PHP function to generate a random password (contains uppercase, lowercase, numeric and other) using shuffle() function.
Sample Solution:
PHP Code:
<?php
function rand_Pass($upper = 1, $lower = 5, $numeric = 3, $other = 2) {
$pass_order = Array();
$passWord = '';
//Create contents of the password
for ($i = 0; $i < $upper; $i++) {
$pass_order[] = chr(rand(65, 90));
}
for ($i = 0; $i < $lower; $i++) {
$pass_order[] = chr(rand(97, 122));
}
for ($i = 0; $i < $numeric; $i++) {
$pass_order[] = chr(rand(48, 57));
}
for ($i = 0; $i < $other; $i++) {
$pass_order[] = chr(rand(33, 47));
}
//using shuffle() to shuffle the order
shuffle($pass_order);
//Final password string
foreach ($pass_order as $char) {
$passWord .= $char;
}
return $passWord;
}
echo "\n"."Generated Password : ".rand_Pass()."\n";
?>
Sample Output:
Generated Password : h1'1#h7Gqfy
Flowchart:
PHP Code Editor:
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Previous: Write a PHP function to shuffle an associative array, preserving key, value pairs.
Next: Write a PHP script to sort an array in reverse order (highest to lowest).
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PHP: Tips of the Day
How to Sort Multi-dimensional Array by Value?
Try a usort, If you are still on PHP 5.2 or earlier, you'll have to define a sorting function first:
Example:
function sortByOrder($a, $b) { return $a['order'] - $b['order']; } usort($myArray, 'sortByOrder');
Starting in PHP 5.3, you can use an anonymous function:
usort($myArray, function($a, $b) { return $a['order'] - $b['order']; });
And finally with PHP 7 you can use the spaceship operator:
usort($myArray, function($a, $b) { return $a['order'] <=> $b['order']; });
To extend this to multi-dimensional sorting, reference the second/third sorting elements if the first is zero - best explained below. You can also use this for sorting on sub-elements.
usort($myArray, function($a, $b) { $retval = $a['order'] <=> $b['order']; if ($retval == 0) { $retval = $a['suborder'] <=> $b['suborder']; if ($retval == 0) { $retval = $a['details']['subsuborder'] <=> $b['details']['subsuborder']; } } return $retval; });
If you need to retain key associations, use uasort() - see comparison of array sorting functions in the manual
Ref : https://bit.ly/3i77vCC
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