CRM/Utils/Number.php

   1 <?php
   2
   3 /**
   4  * Class CRM_Utils_Number
   5  */
   6 class CRM_Utils_Number {
   7   /**
   8    * Create a random number with a given precision.
   9    *
  10    * @param array $precision
  11    *   (int $significantDigits, int $postDecimalDigits).
  12    *
  13    * @return float
  14    * @link https://dev.mysql.com/doc/refman/5.1/en/fixed-point-types.html
  15    */
  16   public static function createRandomDecimal($precision) {
  17     list ($sigFigs, $decFigs) = $precision;
  18     $rand = rand(0, pow(10, $sigFigs) - 1);
  19     return $rand / pow(10, $decFigs);
  20   }
  21
  22   /**
  23    * Given a number, coerce it to meet the precision requirement. If possible, it should
  24    * keep the number as-is. If necessary, this may drop the least-significant digits
  25    * and/or move the decimal place.
  26    *
  27    * @param int|float $keyValue
  28    * @param array $precision
  29    *   (int $significantDigits, int $postDecimalDigits).
  30    * @return float
  31    * @link https://dev.mysql.com/doc/refman/5.1/en/fixed-point-types.html
  32    */
  33   public static function createTruncatedDecimal($keyValue, $precision) {
  34     list ($sigFigs, $decFigs) = $precision;
  35     $sign = ($keyValue < 0) ? '-1' : 1;
  36     $val = str_replace('.', '', abs($keyValue)); // ex: -123.456 ==> 123456
  37     $val = substr($val, 0, $sigFigs); // ex: 123456 => 1234
  38
  39     // Move any extra digits after decimal
  40     $extraFigs = strlen($val) - ($sigFigs - $decFigs);
  41     if ($extraFigs > 0) {
  42       return $sign * $val / pow(10, $extraFigs); // ex: 1234 => 1.234
  43     }
  44     else {
  45       return $sign * $val;
  46     }
  47   }
  48
  49   /**
  50    * Some kind of numbery-looky-printy thing.
  51    */
  52   public static function formatUnitSize($size, $checkForPostMax = FALSE) {
  53     if ($size) {
  54       $last = strtolower($size{strlen($size) - 1});
  55       switch ($last) {
  56         // The 'G' modifier is available since PHP 5.1.0
  57
  58         case 'g':
  59           $size *= 1024;
  60         case 'm':
  61           $size *= 1024;
  62         case 'k':
  63           $size *= 1024;
  64       }
  65
  66       if ($checkForPostMax) {
  67         $maxImportFileSize = self::formatUnitSize(ini_get('upload_max_filesize'));
  68         $postMaxSize = self::formatUnitSize(ini_get('post_max_size'));
  69         if ($maxImportFileSize > $postMaxSize && $postMaxSize == $size) {
  70           CRM_Core_Session::setStatus(ts("Note: Upload max filesize ('upload_max_filesize') should not exceed Post max size ('post_max_size') as defined in PHP.ini, please check with your system administrator."), ts("Warning"), "alert");
  71         }
  72         //respect php.ini upload_max_filesize
  73         if ($size > $maxImportFileSize && $size !== $postMaxSize) {
  74           $size = $maxImportFileSize;
  75           CRM_Core_Session::setStatus(ts("Note: Please verify your configuration for Maximum File Size (in MB) <a href='%1'>Administrator >> System Settings >> Misc</a>. It should support 'upload_max_size' as defined in PHP.ini.Please check with your system administrator.", array(1 => CRM_Utils_System::url('civicrm/admin/setting/misc', 'reset=1'))), ts("Warning"), "alert");
  76         }
  77       }
  78       return $size;
  79     }
  80   }
  81
  82 }