phpmyadmin/libraries/tbl_info.inc.php

   1 <?php
   2 /* vim: set expandtab sw=4 ts=4 sts=4: */
   3 /**
   4  * extracts table properties from create statement
   5  *
   6  * @todo should be handled by class Table
   7  * @todo this should be recoded as functions, to avoid messing with global variables
   8  *
   9  * @package PhpMyAdmin
  10  */
  11 if (! defined('PHPMYADMIN')) {
  12     exit;
  13 }
  14
  15 // Check parameters
  16 PMA_Util::checkParameters(array('db', 'table'));
  17
  18 /**
  19  * Defining global variables, in case this script is included by a function.
  20  */
  21 global $showtable, $tbl_is_view, $tbl_storage_engine, $show_comment, $tbl_collation,
  22        $table_info_num_rows, $auto_increment;
  23
  24 /**
  25  * Gets table information
  26  */
  27 // Seems we need to do this in MySQL 5.0.2,
  28 // otherwise error #1046, no database selected
  29 $GLOBALS['dbi']->selectDb($GLOBALS['db']);
  30
  31
  32 /**
  33  * Holds information about the current table
  34  *
  35  * @todo replace this by PMA_Table
  36  * @global array $GLOBALS['showtable']
  37  * @name $showtable
  38  */
  39 $GLOBALS['showtable'] = array();
  40
  41 // PMA_Table::getStatusInfo() does caching by default, but here
  42 // we force reading of the current table status
  43 // if $reread_info is true (for example, coming from tbl_operations.php
  44 // and we just changed the table's storage engine)
  45 $GLOBALS['showtable'] = $GLOBALS['dbi']->getTable(
  46     $GLOBALS['db'],
  47     $GLOBALS['table']
  48 )->getStatusInfo(
  49     null,
  50     (isset($reread_info) && $reread_info ? true : false)
  51 );
  52
  53 // need this test because when we are creating a table, we get 0 rows
  54 // from the SHOW TABLE query
  55 // and we don't want to mess up the $tbl_storage_engine coming from the form
  56
  57 if ($showtable) {
  58     /** @var PMA_String $pmaString */
  59     $pmaString = $GLOBALS['PMA_String'];
  60
  61     if ($GLOBALS['dbi']->getTable($GLOBALS['db'], $GLOBALS['table'])->isView()) {
  62         $tbl_is_view     = true;
  63         $tbl_storage_engine = __('View');
  64         $show_comment    = null;
  65     } else {
  66         $tbl_is_view     = false;
  67         $tbl_storage_engine = isset($showtable['Engine'])
  68             ? /*overload*/mb_strtoupper($showtable['Engine'])
  69             : '';
  70         $show_comment = '';
  71         if (isset($showtable['Comment'])) {
  72             $show_comment = $showtable['Comment'];
  73         }
  74     }
  75     $tbl_collation       = empty($showtable['Collation'])
  76         ? ''
  77         : $showtable['Collation'];
  78
  79     if (null === $showtable['Rows']) {
  80         $showtable['Rows']   = $GLOBALS['dbi']
  81             ->getTable($GLOBALS['db'], $showtable['Name'])
  82             ->countRecords(true);
  83     }
  84     $table_info_num_rows = isset($showtable['Rows']) ? $showtable['Rows'] : 0;
  85     $row_format = isset($showtable['Row_format']) ? $showtable['Row_format'] : '';
  86     $auto_increment      = isset($showtable['Auto_increment'])
  87         ? $showtable['Auto_increment']
  88         : '';
  89
  90     $create_options      = isset($showtable['Create_options'])
  91         ? explode(' ', $showtable['Create_options'])
  92         : array();
  93
  94     // export create options by its name as variables into global namespace
  95     // f.e. pack_keys=1 becomes available as $pack_keys with value of '1'
  96     unset($pack_keys);
  97     foreach ($create_options as $each_create_option) {
  98         $each_create_option = explode('=', $each_create_option);
  99         if (isset($each_create_option[1])) {
 100             // ensure there is no ambiguity for PHP 5 and 7
 101             ${$each_create_option[0]} = $each_create_option[1];
 102         }
 103     }
 104     // we need explicit DEFAULT value here (different from '0')
 105     $pack_keys = (! isset($pack_keys) || /*overload*/mb_strlen($pack_keys) == 0)
 106         ? 'DEFAULT'
 107         : $pack_keys;
 108     unset($create_options, $each_create_option);
 109 } else {
 110     $pack_keys = $row_format = null;
 111 }// end if