PHP Range() from a to Zz

PHP range() from A to ZZ?

Just Try this- (tested working fine)

function createColumnsArray($end_column, $first_letters = '')
{
  $columns = array();
  $length = strlen($end_column);
  $letters = range('A', 'Z');

  // Iterate over 26 letters.
  foreach ($letters as $letter) {
      // Paste the $first_letters before the next.
      $column = $first_letters . $letter;

      // Add the column to the final array.
      $columns[] = $column;

      // If it was the end column that was added, return the columns.
      if ($column == $end_column)
          return $columns;
  }

  // Add the column children.
  foreach ($columns as $column) {
      // Don't itterate if the $end_column was already set in a previous itteration.
      // Stop iterating if you've reached the maximum character length.
      if (!in_array($end_column, $columns) && strlen($column) < $length) {
          $new_columns = createColumnsArray($end_column, $column);
          // Merge the new columns which were created with the final columns array.
          $columns = array_merge($columns, $new_columns);
      }
  }

  return $columns;
}
echo "<pre>";
print_r( createColumnsArray('BZ'));

copied from http://php.net/range

How to list from A to Z in PHP, and then on to AA, AB, AC, etc

PHP has the string increment operator that does exactly that:

for($x = 'A'; $x < 'ZZ'; $x++)
    echo $x, ' ';

Result:

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z AA AB AC AD AE AF... 

Ref:

PHP follows Perl's convention when dealing with arithmetic operations on character variables and not C's. For example, in PHP and Perl $a = 'Z'; $a++; turns $a into 'AA', while in C a = 'Z'; a++; turns a into '[' (ASCII value of 'Z' is 90, ASCII value of '[' is 91). Note that character variables can be incremented but not decremented and even so only plain ASCII alphabets and digits (a-z, A-Z and 0-9) are supported. Incrementing/decrementing other character variables has no effect, the original string is unchanged.

http://php.net/manual/en/language.operators.increment.php

In PHP why does range a-Z and a for loop applied to the alphabet produce different characters?

Just read the manual: http://php.net/manual/en/language.operators.increment.php

PHP follows Perl's convention when dealing with arithmetic operations
on character variables and not C's. For example, in PHP and Perl $a =
'Z'; $a++; turns $a into 'AA', while in C a = 'Z'; a++; turns a into
'[' (ASCII value of 'Z' is 90, ASCII value of '[' is 91). Note that
character variables can be incremented but not decremented and even so
only plain ASCII alphabets and digits (a-z, A-Z and 0-9) are
supported. Incrementing/decrementing other character variables has no
effect, the original string is unchanged.

php: How to list from a to z, aa to zz, aA to aZ, and so on

function generate($length = 1) {
    $small = range('a', 'z');
    $capital = range('A', 'Z');
    if ($length <= 0) {
        return [];
    } elseif ($length == 1) {
        return array_merge($small, $capital);
    } else {
        $result = [];
        foreach (array_merge($small, $capital) as $letter) {
            foreach (generate($length - 1) as $subLetter) {
                $result[] = $letter . $subLetter;
            }
        }
        return $result;
    }
}

// Sample output
echo '<pre>' . print_r(generate(2), true) . '</pre>';

Try it online

Array with multiple numerical ranges

$alphas = array_merge(range('A', 'Z'), range('a', 'z'));

refer
Way to get all alphabetic chars in an array in PHP?

Is there a range('a','z') for Non-English Alphabet

$arr = range('а', 'я');

var_dump($arr);

But this will work with cp1251 only and lost ё, since it is in the end of the ascii table

PHP: Define a variable within two or more ranges with alternatives to array_merge()?

You can merge the original range() with the new range, and assign it back to $x. You do not have to give it a new name for every new value it gets, you can overwrite the value instead.

$x = range(0,10);
$x = array_merge($x, range(15,30));
print_r($x);

Range php for chr(33, 47)

$other = array_map('chr',range(33,47));

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