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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:

Flowchart: PHP - Generate a random password using shuffle() function

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

Convert a PHP object to an associative array

Just typecast it

$array = (array) $yourObject;

From Arrays:

If an object is converted to an array, the result is an array whose elements are the object's properties. The keys are the member variable names, with a few notable exceptions: integer properties are unaccessible; private variables have the class name prepended to the variable name; protected variables have a '*' prepended to the variable name.These prepended values have null bytes on either side.

Example: Simple Object

$object = new StdClass;
$object->foo = 1;
$object->bar = 2;

var_dump( (array) $object );

Output:

array(2) {
  'foo' => int(1)
  'bar' => int(2)
}

Example: Complex Object

class Foo
{
    private $foo;
    protected $bar;
    public $baz;

    public function __construct()
    {
        $this->foo = 1;
        $this->bar = 2;
        $this->baz = new StdClass;
    }
}

var_dump( (array) new Foo );

Output (with \0s edited in for clarity):

array(3) {
  '\0Foo\0foo' => int(1)
  '\0*\0bar' => int(2)
  'baz' => class stdClass#2 (0) {}
}

Output with var_export instead of var_dump:

array (
  '' . "\0" . 'Foo' . "\0" . 'foo' => 1,
  '' . "\0" . '*' . "\0" . 'bar' => 2,
  'baz' =>
  stdClass::__set_state(array(
  )),
)

Typecasting this way will not do deep casting of the object graph and you need to apply the null bytes (as explained in the manual quote) to access any non-public attributes. So this works best when casting StdClass objects or objects with only public properties. For quick and dirty (what you asked for) it's fine.

Also see this in-depth blog post:

  • Fast PHP Object to Array conversion

Ref : https://bit.ly/3fqiV2E