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Function genererandomtest($keys)

The genererandomtest function processes an array of keys, removing non-'id' key-value pairs and shuffling the arrays. Here's an example using var_dump() to inspect the variables at different stages:


<?php
function genererandomtest($keys) {
    // Remove non-'id' key-value pairs
    foreach ($keys as &$key) {
        $key = ['id' => $key[1]];
    }

    // Randomly shuffle the arrays
    shuffle($keys);

    return $keys;
}

$key = [
    1 => "1",
    2 => "2",
    4 => "5"
];

$key2 = [
    1 => "1",
    2 => "2",
    4 => "5"
];

$key3 = [
    1 => "1",
    2 => "2",
    4 => "5"
];

$key4 = [
    1 => "1",
    2 => "2",
    4 => "5"
];

$key5 = [
    1 => "1",
    2 => "2",
    4 => "5"
];

$key6 = [
    1 => "1",
    2 => "2",
    4 => "5",
    4 => "3"
];

$keys = [$key, $key2, $key3, $key4, $key5, $key6];

echo "
Before shuffling:
";
var_dump($keys);

$shuffledKeys = genererandomtest($keys);

echo "
After shuffling:
";
var_dump($shuffledKeys);

// Print the shuffled arrays
foreach ($shuffledKeys as $key) {
    echo "
";
    print_r($key);
    echo "
\n";
}

?>

Output:




Before shuffling:

array(6) {
  [0]=>
  array(3) {
    [1]=>
    string(1) "1"
    [2]=>
    string(1) "2"
    [4]=>
    string(1) "5"
  }
  [1]=>
  array(3) {
    [1]=>
    string(1) "1"
    [2]=>
    string(1) "2"
    [4]=>
    string(1) "5"
  }
  [2]=>
  array(3) {
    [1]=>
    string(1) "1"
    [2]=>
    string(1) "2"
    [4]=>
    string(1) "5"
  }
  [3]=>
  array(3) {
    [1]=>
    string(1) "1"
    [2]=>
    string(1) "2"
    [4]=>
    string(1) "5"
  }
  [4]=>
  array(3) {
    [1]=>
    string(1) "1"
    [2]=>
    string(1) "2"
    [4]=>
    string(1) "5"
  }
  [5]=>
  array(4) {
    [1]=>
    string(1) "1"
    [2]=>
    string(1) "2"
    [4]=>
    string(1) "3"
  }
}


After shuffling:

array(6) {
  [0]=>
  array(1) {
    ["id"]=>
    string(1) "1"
  }
  [1]=>
  array(1) {
    ["id"]=>
    string(1) "1"
  }
  [2]=>
  array(1) {
    ["id"]=>
    string(1) "1"
  }
  [3]=>
  array(1) {
    ["id"]=>
    string(1) "1"
  }
  [4]=>
  array(1) {
    ["id"]=>
    string(1) "1"
  }
  [5]=>
  array(1) {
    ["id"]=>
    string(1) "1"
  }
}


Array
(
    [id] => 1
)




Array
(
    [id] => 1
)




Array
(
    [id] => 1
)




Array
(
    [id] => 1
)




Array
(
    [id] => 1
)




Array
(
    [id] => 1
)

Variable Dumping

PHP has a useful function named var_dump() that prints the current type and value for one or more variables. Arrays and objects are printed recursively with their values indented to show structure.


<?php
function genererandomtest($keys) {
    // Remove non-'id' key-value pairs
    foreach ($keys as &$key) {
        $key = ['id' => $key[1]];
    }

    // Randomly shuffle the arrays
    shuffle($keys);

    return $keys;
}

$key = [
    1 => "1",
    2 => "2",
    4 => "5"
];

$key2 = [
    1 => "1",
    2 => "2",
    4 => "5"
];

$key3 = [
    1 => "1",
    2 => "2",
    4 => "5"
];

$key4 = [
    1 => "1",
    2 => "2",
    4 => "5"
];

$key5 = [
    1 => "1",
    2 => "2",
    4 => "5"
];

$key6 = [
    1 => "1",
    2 => "2",
    4 => "5",
    4 => "3"
];

$keys = [$key, $key2, $key3, $key4, $key5, $key6];

echo "
Before shuffling:
";
var_dump($keys);

$shuffledKeys = genererandomtest($keys);

echo "
After shuffling:
";
var_dump($shuffledKeys);

// Print the shuffled arrays
foreach ($shuffledKeys as $key) {
    echo "
";
    print_r($key);
    echo "
\n";
}

?>

Output:




Before shuffling:

var_dump($keys);


After shuffling:

var_dump($shuffledKeys);