_locale_import_tokenize_formula

• Drupal 4.6
• Drupal 4.7
• Drupal 5
• Drupal 6
• Drupal 7

Versions

4.6 – 7

_locale_import_tokenize_formula($formula)

Backward compatible implementation of token_get_all() for formula parsing

author Gerhard Killesreiter

Parameters

$string A string containing the arithmetic formula

Return value

The PHP version of the formula

Code

includes/locale.inc, line 579

<?php
function _locale_import_tokenize_formula($formula) {
  $formula = str_replace(" ", "", $formula);
  $tokens = array();
  for ($i = 0; $i < strlen($formula); $i++) {
    if (is_numeric($formula{$i})) {
      $num = $formula{$i};
      $j = $i + 1;
      while($j < strlen($formula) && is_numeric($formula{$j})) {
        $num .= $formula{$j};
        $j++;
      }
      $i = $j - 1;
      $tokens[] = $num;
    }
    elseif ($pos = strpos(" =<>!&|", $formula{$i})) { // We won't have a space
      $next = $formula{($i+1)};
      switch ($pos) {
        case 1:
        case 2:
        case 3:
        case 4:
          if ($next == '=') {
            $tokens[] = $formula{$i} .'=';
            $i++;
          }
          else {
            $tokens[] = $formula{$i};
          }
          break;
        case 5:
          if ($next == '&') {
            $tokens[] = '&&';
            $i++;
          }
          else {
            $tokens[] = $formula{$i};
          }
          break;
        case 6:
          if ($next == '|') {
            $tokens[] = '||';
            $i++;
          }
          else {
            $tokens[] = $formula{$i};
          }
          break;
      }
    }
    else {
      $tokens[] = $formula{$i};
    }
  }
  return $tokens;
}
?>

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