install.php

   1 <?php /// $Id$
   2       /// install.php - helps admin user to create a config.php file
   3
   4 /// If config.php exists already then we are not needed.
   5
   6 if (file_exists('./config.php')) {
   7     header('Location: index.php');
   8     die;
   9 } else {
  10     $configfile = './config.php';
  11 }
  12
  13 ///==========================================================================//
  14 /// We are doing this in stages
  15 /// 0. Welcome and language settings
  16 /// 1. Compatibility
  17 /// 2. Database settings
  18 /// 3. Host settings
  19 /// 4. Administration directory name
  20 /// 5. Save or display the settings
  21 /// 6. Redirect to index.php
  22 ///==========================================================================//
  23
  24
  25
  26 /// Begin the session as we are holding all information in a session
  27 /// variable until the end.
  28
  29 session_name('MoodleSession');
  30 @session_start();
  31
  32 if (! isset($_SESSION['INSTALL'])) {
  33     $_SESSION['INSTALL'] = array();
  34 }
  35
  36 $INSTALL = &$_SESSION['INSTALL'];   // Makes it easier to reference
  37
  38
  39 /// If it's our first time through this script then we need to set some default values
  40
  41 if ( empty($INSTALL['language']) and empty($_POST['language']) ) {
  42
  43     /// set defaults
  44     $INSTALL['language']        = 'en';
  45
  46     $INSTALL['dbhost']          = 'localhost';
  47     $INSTALL['dbuser']          = '';
  48     $INSTALL['dbpass']          = '';
  49     $INSTALL['dbtype']          = 'mysql';
  50     $INSTALL['dbname']          = 'moodle';
  51     $INSTALL['prefix']          = 'mdl_';
  52
  53     $INSTALL['wwwroot']         = '';
  54     $INSTALL['dirroot']         = dirname(__FILE__);
  55     $INSTALL['dataroot']        = dirname(dirname(__FILE__)) . '/moodledata';
  56
  57     $INSTALL['admindirname']    = 'admin';
  58
  59     $INSTALL['stage'] = 0;
  60 }
  61
  62
  63
  64 //==========================================================================//
  65
  66 /// Fake some settings so that we can use selected functions from moodlelib.php and weblib.php
  67
  68 $SESSION->lang = (!empty($_POST['language'])) ? $_POST['language'] : $INSTALL['language'];
  69 $CFG->dirroot = $INSTALL['dirroot'];
  70 $CFG->dataroot = $INSTALL['dataroot'];
  71 $CFG->directorypermissions = 00777;
  72
  73
  74 /// Include some moodle libraries
  75
  76 require_once('./lib/moodlelib.php');
  77 require_once('./lib/weblib.php');
  78 require_once('./lib/adodb/adodb.inc.php');
  79
  80
  81 /// guess the www root
  82 if ($INSTALL['wwwroot'] == '') {
  83     list($INSTALL['wwwroot'], $xtra) = explode('/install.php', qualified_me());
  84 }
  85
  86 $stagetext = array(0 => get_string('chooselanguage', 'install'),
  87                         get_string('compatibilitysettings', 'install'),
  88                         get_string('directorysettings', 'install'),
  89                         get_string('databasesettings', 'install'),
  90                         get_string('admindirsetting', 'install'),
  91                         get_string('configurationcomplete', 'install')
  92                     );
  93
  94
  95
  96
  97 //==========================================================================//
  98
  99 /// Are we in help mode?
 100
 101 if (isset($_GET['help'])) {
 102     $nextstage = -1;
 103 }
 104
 105
 106
 107 //==========================================================================//
 108
 109 /// Are we in config download mode?
 110
 111 if (isset($_GET['download'])) {
 112     header("Content-Type: application/download\n");
 113     header("Content-Disposition: attachment; filename=\"config.php\"");
 114     echo $INSTALL['config'];
 115     exit;
 116 }
 117
 118
 119
 120 //==========================================================================//
 121
 122 /// Was data submitted?
 123
 124 if (isset($_POST['stage'])) {
 125
 126     /// Get the stage for which the form was set and the next stage we are going to
 127
 128
 129     if ( $goforward = (! empty( $_POST['next'] )) ) {
 130         $nextstage = $_POST['stage'] + 1;
 131     } else {
 132         $nextstage = $_POST['stage'] - 1;
 133     }
 134
 135     if ($nextstage < 0) $nextstage = 0;
 136
 137
 138     /// Store any posted data
 139     foreach ($_POST as $setting=>$value) {
 140         $INSTALL[$setting] = $value;
 141     }
 142
 143 } else {
 144
 145     $goforward = true;
 146     $nextstage = 0;
 147
 148 }
 149
 150
 151
 152 //==========================================================================//
 153
 154 /// Check the directory settings
 155
 156 if ($INSTALL['stage'] == 2) {
 157
 158     error_reporting(0);
 159
 160
 161     /// check dirroot
 162     if (($fh = @fopen($INSTALL['dirroot'].'/install.php', 'r')) === false ) {
 163         $CFG->dirroot = dirname(__FILE__);
 164         $INSTALL['dirroot'] = dirname(__FILE__);
 165         $errormsg .= get_string('dirrooterror', 'install').'<br />';
 166     }
 167     if ($fh) fclose($fh);
 168
 169     $CFG->dirroot = $INSTALL['dirroot'];
 170
 171     /// check wwwroot
 172     if (ini_get('allow_url_fopen')) {
 173         if (($fh = @fopen($INSTALL['wwwroot'].'/install.php', 'r')) === false) {
 174             $errormsg .= get_string('wwwrooterror', 'install').'<br />';
 175         }
 176     }
 177     if ($fh) fclose($fh);
 178
 179     /// check dataroot
 180     $CFG->dataroot = $INSTALL['dataroot'];
 181     if (make_upload_directory('sessions', false) === false ) {
 182         $errormsg = get_string('datarooterror', 'install').'<br />';
 183     }
 184     if ($fh) fclose($fh);
 185
 186     if (!empty($errormsg)) $nextstage = 2;
 187
 188     error_reporting(7);
 189 }
 190
 191
 192
 193 //==========================================================================//
 194
 195 /// Check database settings if stage 3 data submitted
 196 /// Try to connect to the database. If that fails then try to create the database
 197
 198 if ($INSTALL['stage'] == 3) {
 199
 200     if (empty($INSTALL['dbname'])) {
 201         $INSTALL['dbname'] = 'moodle';
 202     }
 203
 204     /// different format for postgres7 by socket
 205     if ($INSTALL['dbtype'] == 'postgres7' and ($INSTALL['dbhost'] == 'localhost' || $INSTALL['dbhost'] == '127.0.0.1')) {
 206         $INSTALL['dbhost'] = "user='{$INSTALL['dbuser']}' password='{$INSTALL['dbpass']}' dbname='{$INSTALL['dbname']}'";
 207         $INSTALL['dbuser'] = '';
 208         $INSTALL['dbpass'] = '';
 209         $INSTALL['dbname'] = '';
 210
 211         if ($INSTALL['prefix'] == '') { /// must have a prefix
 212             $INSTALL['prefix'] = 'mdl_';
 213         }
 214     }
 215
 216     if ($INSTALL['dbtype'] == 'mysql') {  /// Check MySQL extension is present
 217         if (!extension_loaded('mysql')) {
 218             $errormsg = get_string('mysqlextensionisnotpresentinphp', 'install');
 219             $nextstage = 3;
 220         }
 221     }
 222
 223     if (empty($errormsg)) {
 224
 225         $db = &ADONewConnection($INSTALL['dbtype']);
 226
 227         error_reporting(0);  // Hide errors
 228
 229         if (! $dbconnected = $db->Connect($INSTALL['dbhost'],$INSTALL['dbuser'],$INSTALL['dbpass'],$INSTALL['dbname'])) {
 230             /// The following doesn't seem to work but we're working on it
 231             /// If you come up with a solution for creating a database in MySQL
 232             /// feel free to put it in and let us know
 233             if ($dbconnected = $db->Connect($INSTALL['dbhost'],$INSTALL['dbuser'],$INSTALL['dbpass'])) {
 234                 switch ($INSTALL['dbtype']) {   /// Try to create a database
 235                     case 'mysql':
 236                         if ($db->Execute("CREATE DATABASE {$INSTALL['dbname']};")) {
 237                             $dbconnected = $db->Connect($INSTALL['dbhost'],$INSTALL['dbuser'],$INSTALL['dbpass'],$INSTALL['dbname']);
 238                         } else {
 239                             $errormsg = get_string('dbcreationerror', 'install');
 240                             $nextstage = 3;
 241                         }
 242                         break;
 243                 }
 244             }
 245         }
 246     }
 247
 248     error_reporting(7);
 249
 250     if (($dbconnected === false) and (empty($errormsg)) ) {
 251         $errormsg = get_string('dbconnectionerror', 'install');
 252         $nextstage = 3;
 253     }
 254 }
 255
 256
 257
 258 //==========================================================================//
 259
 260 /// If the next stage is admin directory settings OR we have just come from there then
 261 /// check the admin directory.
 262 /// If we can open a file then we know that the admin name is correct.
 263
 264 if ($nextstage == 4 or $INSTALL['stage'] == 4) {
 265     if (!ini_get('allow_url_fopen')) {
 266         $nextstage = ($goforward) ? 5 : 3;
 267     } else if (($fh = @fopen($INSTALL['wwwroot'].'/'.$INSTALL['admindirname'].'/site.html', 'r')) !== false) {
 268         $nextstage = ($goforward) ? 5 : 3;
 269         fclose($fh);
 270     } else {
 271         if ($nextstage != 4) {
 272             $errormsg = get_string('admindirerror', 'install');
 273             $nextstage = 4;
 274         }
 275     }
 276 }
 277
 278
 279
 280 //==========================================================================//
 281
 282 /// Display or print the data
 283 /// Put the data into a string
 284 /// Try to open config file for writing.
 285
 286 if ($nextstage == 5) {
 287
 288     $str  = '<?php  /// Moodle Configuration File '."\r\n";
 289     $str .= "\r\n";
 290
 291     $str .= 'unset($CFG);'."\r\n";
 292     $str .= "\r\n";
 293
 294     $str .= '$CFG->dbtype    = \''.$INSTALL['dbtype']."';\r\n";
 295     $str .= '$CFG->dbhost    = \''.addslashes($INSTALL['dbhost'])."';\r\n";
 296     if (!empty($INSTALL['dbname'])) {
 297         $str .= '$CFG->dbname    = \''.$INSTALL['dbname']."';\r\n";
 298         $str .= '$CFG->dbuser    = \''.$INSTALL['dbuser']."';\r\n";
 299         $str .= '$CFG->dbpass    = \''.$INSTALL['dbpass']."';\r\n";
 300     }
 301     $str .= '$CFG->dbpersist =  false;'."\r\n";
 302     $str .= '$CFG->prefix    = \''.$INSTALL['prefix']."';\r\n";
 303     $str .= "\r\n";
 304
 305     $str .= '$CFG->wwwroot   = \''.$INSTALL['wwwroot']."';\r\n";
 306     $str .= '$CFG->dirroot   = \''.$INSTALL['dirroot']."';\r\n";
 307     $str .= '$CFG->dataroot  = \''.$INSTALL['dataroot']."';\r\n";
 308     $str .= '$CFG->admin     = \''.$INSTALL['admindirname']."';\r\n";
 309     $str .= "\r\n";
 310
 311     $str .= '$CFG->directorypermissions = 00777;  // try 02777 on a server in Safe Mode'."\r\n";
 312     $str .= "\r\n";
 313
 314     $str .= 'require_once("$CFG->dirroot/lib/setup.php");'."\r\n";
 315     $str .= '// MAKE SURE WHEN YOU EDIT THIS FILE THAT THERE ARE NO SPACES, BLANK LINES,'."\r\n";
 316     $str .= '// RETURNS, OR ANYTHING ELSE AFTER THE TWO CHARACTERS ON THE NEXT LINE.'."\r\n";
 317     $str .= '?>';
 318
 319     umask(0137);
 320
 321     if (( $configsuccess = ($fh = @fopen($configfile, 'w')) ) !== false) {
 322         fwrite($fh, $str);
 323         fclose($fh);
 324     }
 325
 326
 327     $INSTALL['config'] = $str;
 328 }
 329
 330
 331
 332 //==========================================================================//
 333
 334 ?>
 335
 336
 337
 338 <html dir="<?php echo (get_string('this_direction') == 'rtl') ? 'rtl' : 'ltr' ?>">
 339 <head>
 340 <link rel="shortcut icon" href="theme/standard/favicon.ico" />
 341 <title>Moodle Install</title>
 342 <meta http-equiv="content-type" content="text/html; charset=<?php print_string('thischarset') ?>" />
 343 <?php css_styles() ?>
 344
 345 </head>
 346
 347 <body>
 348
 349
 350 <?php
 351 if (isset($_GET['help'])) {
 352     print_install_help($_GET['help']);
 353     close_window_button();
 354 } else {
 355 ?>
 356
 357
 358 <table class="main" align="center" cellpadding="3" cellspacing="0">
 359     <tr>
 360         <td class="td_mainlogo">
 361             <p class="p_mainlogo"><img src="pix/moodlelogo-med.gif" width="240" height="60" alt=\"\"></p>
 362         </td>
 363         <td class="td_mainlogo" valign="bottom">
 364             <p class="p_mainheader"><?php print_string('installation', 'install') ?></p>
 365         </td>
 366     </tr>
 367
 368     <tr>
 369         <td class="td_mainheading" colspan="2">
 370             <p class="p_mainheading"><?php echo $stagetext[$nextstage] ?></p>
 371         </td>
 372     </tr>
 373
 374     <tr>
 375         <td class="td_main" colspan="2">
 376
 377 <?php
 378
 379 if (!empty($errormsg)) echo "<p class=\"errormsg\" align=\"center\">$errormsg</p>\n";
 380
 381
 382 if ($nextstage == 5) {
 383     $INSTALL['stage'] = 0;
 384     $options = array();
 385     $options['lang'] = $INSTALL['language'];
 386     if ($configsuccess) {
 387         echo "<p>".get_string('configfilewritten', 'install')."</p>\n";
 388
 389         echo "<table cellspacing=\"0\" cellpadding=\"0\" border=\"0\" width=\"100%\">\n";
 390         echo "<tr>\n";
 391         echo "<td width=\"33.3%\">&nbsp;</td>\n";
 392         echo "<td width=\"33.3%\">&nbsp;</td>\n";
 393         echo "<td width=\"33.3%\" align=\"right\">\n";
 394         print_single_button("index.php", $options, get_string('continue')."  &raquo;");
 395         echo "</td>\n";
 396         echo "</tr>\n";
 397         echo "</table>\n";
 398
 399     } else {
 400         echo "<p class=\"errormsg\">".get_string('configfilenotwritten', 'install')."</p>";
 401
 402         echo "<table cellspacing=\"0\" cellpadding=\"0\" border=\"0\" width=\"100%\">\n";
 403         echo "<tr>\n";
 404         echo "<td width=\"33.3%\">&nbsp;</td>\n";
 405         echo "<td width=\"33.3%\" align=\"center\">\n";
 406         $installoptions = array();
 407         $installoptions['download'] = 1;
 408         print_single_button("install.php", $installoptions, get_string('download', 'install'));
 409         echo "</td>\n";
 410         echo "<td width=\"33.3%\" align=\"right\">\n";
 411         print_single_button("index.php", $options, get_string('continue')."  &raquo;");
 412         echo "</td>\n";
 413         echo "</tr>\n";
 414         echo "</table>\n";
 415
 416         echo "<hr />\n";
 417         echo "<div style=\"text-align: left\">\n";
 418         print_object(htmlentities($str));
 419         echo "</div>\n";
 420     }
 421 } else {
 422     $formaction = (isset($_GET['configfile'])) ? "install.php?configfile=".$_GET['configfile'] : "install.php";
 423     form_table($nextstage, $formaction);
 424 }
 425
 426 ?>
 427
 428         </td>
 429     </tr>
 430 </table>
 431
 432 <?php
 433 }
 434 ?>
 435
 436 </body>
 437 </html>
 438
 439
 440
 441
 442
 443
 444
 445
 446
 447
 448 <?php
 449
 450 //==========================================================================//
 451
 452
 453 function print_object($object) {
 454     echo "<pre>\n";
 455     print_r($object);
 456     echo "</pre>\n";
 457 }
 458
 459
 460
 461 //==========================================================================//
 462
 463 function form_table($nextstage = 0, $formaction = "install.php") {
 464     global $INSTALL;
 465
 466     /// standard lines for all forms
 467 ?>
 468
 469     <form name="installform" method="post" action="<?php echo $formaction ?>">
 470     <input type="hidden" name="stage" value="<?php echo $nextstage ?>" />
 471     <table class="install_table" cellspacing="3" cellpadding="3" align="center">
 472
 473 <?php
 474     /// what we do depends on the stage we're at
 475     switch ($nextstage) {
 476         case 0: /// Language settings
 477 ?>
 478             <tr>
 479                 <td class="td_left"><p><?php print_string('language') ?></p></td>
 480                 <td class="td_right">
 481                 <?php choose_from_menu (get_list_of_languages(), 'language', $INSTALL['language'], '') ?>
 482                 </td>
 483             </tr>
 484
 485 <?php
 486             break;
 487         case 1: /// Compatibilty check
 488             $compatsuccess = true;
 489
 490             /// Check that PHP is of a sufficient version
 491             print_compatibility_row(check_php_version("4.1.0"), get_string('phpversion', 'install'), get_string('phpversionerror', 'install'), 'phpversionhelp');
 492             /// Check session auto start
 493             print_compatibility_row(!ini_get_bool('session.auto_start'), get_string('sessionautostart', 'install'), get_string('sessionautostarterror', 'install'), 'sessionautostarthelp');
 494             /// Check magic quotes
 495             print_compatibility_row(!ini_get_bool('magic_quotes_runtime'), get_string('magicquotesruntime', 'install'), get_string('magicquotesruntimeerror', 'install'), 'magicquotesruntimehelp');
 496             /// Check safe mode
 497             print_compatibility_row(!ini_get_bool('safe_mode'), get_string('safemode', 'install'), get_string('safemodeerror', 'install'), 'safemodehelp', true);
 498             /// Check file uploads
 499             print_compatibility_row(ini_get_bool('file_uploads'), get_string('fileuploads', 'install'), get_string('fileuploadserror', 'install'), 'fileuploadshelp', true);
 500             /// Check GD version
 501             print_compatibility_row(check_gd_version(), get_string('gdversion', 'install'), get_string('gdversionerror', 'install'), 'gdversionhelp', true);
 502             /// Check memory limit
 503             print_compatibility_row(check_memory_limit(), get_string('memorylimit', 'install'), get_string('memorylimiterror', 'install'), 'memorylimithelp', true);
 504
 505
 506             break;
 507         case 2: /// Directory settings
 508 ?>
 509
 510             <tr>
 511                 <td class="td_left"><p><?php print_string('wwwroot', 'install') ?></p></td>
 512                 <td class="td_right">
 513                     <input type="text" size="40"name="wwwroot" value="<?php echo $INSTALL['wwwroot'] ?>" />
 514                 </td>
 515             </tr>
 516             <tr>
 517                 <td class="td_left"><p><?php print_string('dirroot', 'install') ?></p></td>
 518                 <td class="td_right">
 519                     <input type="text" size="40" name="dirroot" value="<?php echo $INSTALL['dirroot'] ?>" />
 520                 </td>
 521             </tr>
 522             <tr>
 523                 <td class="td_left"><p><?php print_string('dataroot', 'install') ?></p></td>
 524                 <td class="td_right">
 525                     <input type="text" size="40" name="dataroot" value="<?php echo $INSTALL['dataroot'] ?>" />
 526                 </td>
 527             </tr>
 528
 529 <?php
 530             break;
 531         case 3: /// Database settings
 532 ?>
 533
 534             <tr>
 535                 <td class="td_left"><p><?php print_string('dbtype', 'install') ?></p></td>
 536                 <td class="td_right">
 537                 <?php choose_from_menu (array("mysql" => "mysql", "postgres7" => "postgres7"), 'dbtype', $INSTALL['dbtype'], '') ?>
 538                 </td>
 539             </tr>
 540             <tr>
 541                 <td class="td_left"><p><?php print_string('dbhost', 'install') ?></p></td>
 542                 <td class="td_right">
 543                     <input type="text" size="40" name="dbhost" value="<?php echo $INSTALL['dbhost'] ?>" />
 544                 </td>
 545             </tr>
 546             <tr>
 547                 <td class="td_left"><p><?php print_string('database', 'install') ?></p></td>
 548                 <td class="td_right">
 549                     <input type="text" size="40" name="dbname" value="<?php echo $INSTALL['dbname'] ?>" />
 550                 </td>
 551             </tr>
 552             <tr>
 553                 <td class="td_left"><p><?php print_string('user') ?></p></td>
 554                 <td class="td_right">
 555                     <input type="text" size="40" name="dbuser" value="<?php echo $INSTALL['dbuser'] ?>" />
 556                 </td>
 557             </tr>
 558             <tr>
 559                 <td class="td_left"><p><?php print_string('password') ?></p></td>
 560                 <td class="td_right">
 561                     <input type="password" size="40" name="dbpass" value="<?php echo $INSTALL['dbpass'] ?>" />
 562                 </td>
 563             </tr>
 564             <tr>
 565                 <td class="td_left"><p><?php print_string('dbprefix', 'install') ?></p></td>
 566                 <td class="td_right">
 567                     <input type="text" size="40" name="prefix" value="<?php echo $INSTALL['prefix'] ?>" />
 568                 </td>
 569             </tr>
 570
 571 <?php
 572             break;
 573         case 4: /// Administration directory setting
 574 ?>
 575
 576             <tr>
 577                 <td class="td_left"><p><?php print_string('admindirname', 'install') ?></p></td>
 578                 <td class="td_right">
 579                     <input type="text" size="40" name="admindirname" value="<?php echo $INSTALL['admindirname'] ?>" />
 580                 </td>
 581             </tr>
 582
 583
 584 <?php
 585             break;
 586         default:
 587     }
 588 ?>
 589
 590     <tr>
 591         <td colspan="<?php echo ($nextstage == 1) ? '3' : '2'; ?>">
 592
 593             <?php echo ($nextstage < 5) ? "<input type=\"submit\" name=\"next\" value=\"".get_string('next')."  &raquo;\" style=\"float: right\"/>\n" : "&nbsp;\n" ?>
 594             <?php echo ($nextstage > 0) ? "<input type=\"submit\" name=\"prev\" value=\"&laquo;  ".get_string('previous')."\" style=\"float: left\"/>\n" : "&nbsp;\n" ?>
 595
 596
 597         </td>
 598
 599     </tr>
 600
 601     </table>
 602     </form>
 603
 604 <?php
 605 }
 606
 607
 608
 609 //==========================================================================//
 610
 611 function print_compatibility_row($success, $testtext, $errormessage, $helpfield='', $caution=false) {
 612     echo "<tr>\n";
 613     echo "<td class=\"td_left\" valign=\"top\" nowrap width=\"160\"><p>$testtext</p></td>\n";
 614     if ($success) {
 615         echo "<td valign=\"top\"><p class=\"p_pass\">".get_string('pass', 'install')."</p></td>\n";
 616         echo "<td valign=\"top\">&nbsp;</td>\n";
 617     } else {
 618         echo "<td valign=\"top\"";
 619         echo ($caution) ? "<p class=\"p_caution\">".get_string('caution', 'install') : "<p class=\"p_fail\">".get_string('fail', 'install');
 620         echo "</p></td>\n";
 621         echo "<td valign=\"top\">";
 622         echo "<p>$errormessage ";
 623         install_helpbutton("install.php?help=$helpfield");
 624         echo "</p></td>\n";
 625     }
 626     echo "</tr>\n";
 627     return $success;
 628 }
 629
 630
 631 //==========================================================================//
 632
 633 function install_helpbutton($url, $title='') {
 634     if ($title == '') {
 635         $title = get_string('help');
 636     }
 637     echo "<a href=\"javascript: void(0)\">";
 638     echo "<img src=\"./pix/help.gif\" height=\"17\" width=\"17\" alt=\"$title\"";
 639     echo "border=\"0\" align=\"middle\" title=\"$title\" ";
 640     echo "onClick=\"return window.open('$url', 'Help', 'menubar=0,location=0,scrollbars,resizable,width=500,height=400')\">";
 641     echo "</a>\n";
 642 }
 643
 644
 645
 646 //==========================================================================//
 647
 648 function print_install_help($help) {
 649     switch ($help) {
 650         case 'phpversionhelp':
 651             print_string($help, 'install', phpversion());
 652             break;
 653         case 'memorylimithelp':
 654             print_string($help, 'install', get_memory_limit());
 655             break;
 656         default:
 657             print_string($help, 'install');
 658     }
 659 }
 660
 661
 662 //==========================================================================//
 663
 664 function get_memory_limit() {
 665     if ($limit = ini_get('memory_limit')) {
 666         return $limit;
 667     } else {
 668         return get_cfg_var('memory_limit');
 669     }
 670 }
 671
 672 //==========================================================================//
 673
 674 function check_memory_limit() {
 675
 676     /// if limit is already 16M or more then we don't care if we can change it or not
 677     if ((int)str_replace('M', '', get_memory_limit()) >= 16) {
 678         return true;
 679     }
 680
 681     /// Otherwise, see if we can change it ourselves
 682     @ini_set('memory_limit', '16M');
 683     return ((int)str_replace('M', '', get_memory_limit()) >= 16);
 684 }
 685
 686 //==========================================================================//
 687
 688 function css_styles() {
 689 ?>
 690
 691 <style type="text/css">
 692
 693     body { background-color: #ffeece; }
 694     p, li {
 695         font-family: helvetica, arial, sans-serif;
 696         font-size: 10pt;
 697     }
 698     a { text-decoration: none; color: blue; }
 699     .errormsg {
 700         color: red;
 701         font-weight: bold;
 702     }
 703     blockquote {
 704         font-family: courier, monospace;
 705         font-size: 10pt;
 706     }
 707     .install_table {
 708         width: 500px;
 709     }
 710     .td_left {
 711         text-align: right;
 712         font-weight: bold;
 713     }
 714     .td_right {
 715         text-align: left;
 716     }
 717     .main {
 718         width: 500px;
 719         border-width: 1px;
 720         border-style: solid;
 721         border-color: #ffc85f;
 722         -moz-border-radius-bottomleft: 15px;
 723         -moz-border-radius-bottomright: 15px;
 724     }
 725     .td_mainheading {
 726         background-color: #fee6b9;
 727         padding: 10px;
 728     }
 729     .td_main {
 730         text-align: center;
 731     }
 732     .td_mainlogo {
 733     }
 734     .p_mainlogo {
 735     }
 736     .p_mainheading {
 737         font-size: 11pt;
 738     }
 739     .p_mainheader{
 740         text-align: right;
 741         font-size: 20pt;
 742         font-weight: bold;
 743     }
 744     .p_pass {
 745         color: green;
 746         font-weight: bold;
 747     }
 748     .p_fail {
 749         color: red;
 750         font-weight: bold;
 751     }
 752     .p_caution {
 753         color: #ff6600;
 754         font-weight: bold;
 755     }
 756     .p_help {
 757         text-align: center;
 758         font-family: helvetica, arial, sans-serif;
 759         font-size: 14pt;
 760         font-weight: bold;
 761         color: #333333;
 762     }
 763
 764 </style>
 765
 766 <?php
 767 }
 768 ?>