Configurable memory limit (RFE #1373904).

ChangeLog

@@ -9,6 +9,8 @@ $Source$
     * Documentation.html, libraries/common.lib.php,
       libraries/config.default.php, libraries/database_interface.lib.php: Add
       support for hiding databases (RFE #1372865).
+    * Documentation.html, export.php, import.php,
+      libraries/config.default.php: Configurable memory limit (RFE #1373904).
 
 2005-12-14 Sebastian Mendel <cybot_tm@users.sourceforge.net>
     * libraries/Config.class.php:

Documentation.html

@@ -66,7 +66,7 @@ <h2>Requirements</h2>
     <li>
         <b>PHP</b>
         <ul>
-		<li>You need PHP 4.1.0 or newer, with <tt>session</tt> support (<a href="#faq1_31">*</a>)</li>
+                <li>You need PHP 4.1.0 or newer, with <tt>session</tt> support (<a href="#faq1_31">*</a>)</li>
             <li>If you want to display inline thumbnails of JPEGs with the
                 original aspect ratio, you also need GD2 support in PHP</li>
             <li>Starting with phpMyAdmin 2.6.1, MIME-based transformations
@@ -343,7 +343,7 @@ <h3>Using authentication modes</h3>
 
 GRANT SELECT, INSERT, UPDATE, DELETE ON &lt;pma_db&gt;.* TO 'pma'@'localhost';
         </pre>
-	(this of course requires that your <a href="#linked-tables">linked-tables infrastructure</a> be set up).
+        (this of course requires that your <a href="#linked-tables">linked-tables infrastructure</a> be set up).
         <br />
         Of course, the above queries only work if your MySQL version supports
         the GRANT command. This is the case since 3.22.11.
@@ -864,8 +864,8 @@ <h2>Configuration</h2>
         you want to have on hold. On every login, this list gets cut to the maximum amount.
         <br /><br />
 
-	The query history is only available if JavaScript is enabled in your 
-	browser.
+        The query history is only available if JavaScript is enabled in your 
+        browser.
         <br /><br />
 
         To allow the usage of this functionality:
@@ -1003,6 +1003,15 @@ <h2>Configuration</h2>
         effect when PHP is running in safe mode.
     </dd>
 
+    <dt><b><a name="cfg_MemoryLimit"></a>$cfg[MemoryLimit] </b>integer [number of bytes]</dt>
+    <dd>
+        Set the number of bytes a script is allowed to allocate. If number set
+        to zero, no limit is imposed.<br />
+        This setting is used while importing/exporting dump files but has no
+        effect when PHP is running in safe mode.<br />
+        You can also use any string as in php.ini, eg. '16M'.
+    </dd>
+
     <dt><b><a name="cfg_SkipLockedTables"></a>$cfg[SkipLockedTables] </b>boolean</dt>
     <dd>
         Mark used tables and make it possible to show databases with locked
@@ -1705,14 +1714,14 @@ <h2>Configuration</h2>
     changes to display a query box. 
         <br /><br />
         The size of this query window can be customized with 
-	<tt>$cfg['QueryWindowWidth']</tt> and <tt>$cfg['QueryWindowWidth']</tt>
-	- both integers for the size in pixels. Note that normally, those
-	parameters will be modified in <tt>layout.inc.php</tt> for the
-	theme you are using.
+        <tt>$cfg['QueryWindowWidth']</tt> and <tt>$cfg['QueryWindowWidth']</tt>
+        - both integers for the size in pixels. Note that normally, those
+        parameters will be modified in <tt>layout.inc.php</tt> for the
+        theme you are using.
         <br /><br />
-	If <tt>$cfg['EditInWindow']</tt> is set to true, a click on [Edit] 
-	from the results page (in the &quot;Showing Rows&quot; section) 
-	opens the query window and puts the current query
+        If <tt>$cfg['EditInWindow']</tt> is set to true, a click on [Edit] 
+        from the results page (in the &quot;Showing Rows&quot; section) 
+        opens the query window and puts the current query
         inside it.  If set to false, clicking on the link puts the SQL
         query in the right panel's query box.
         <br /><br />
@@ -2976,11 +2985,11 @@ <h4>
         set to the default (200) or another low value, you could get this
         error if your table has a high number of columns. Adjust this setting
         accordingly. (Thanks to Klaus Dorninger for the hint).
-	</li>
-	<li>
-	In the <tt>php.ini</tt> directive <tt>arg_separator.input</tt>, a value
+        </li>
+        <li>
+        In the <tt>php.ini</tt> directive <tt>arg_separator.input</tt>, a value
         of &quot;;&quot; will cause this error. Replace it with &quot;&amp;;&quot;.
-	</li>
+        </li>
     </ul>
 
 <a name="faqlimitations"></a><br />

export.php

@@ -35,6 +35,9 @@
  * Increase time limit for script execution and initializes some variables
  */
 @set_time_limit($cfg['ExecTimeLimit']);
+if (!empty($cfg['MemoryLimit'])) {
+    @ini_set('memory_limit', $cfg['MemoryLimit']);
+}
 
 // Start with empty buffer
 $dump_buffer = '';

import.php

@@ -91,6 +91,10 @@
 }
 
 @set_time_limit($cfg['ExecTimeLimit']);
+if (!empty($cfg['MemoryLimit'])) {
+    @ini_set('memory_limit', $cfg['MemoryLimit']);
+}
+
 $timestamp = time();
 if (isset($allow_interrupt)) {
     $maximum_time = ini_get('max_execution_time');

libraries/config.default.php

@@ -126,6 +126,7 @@
 $cfg['PersistentConnections']   = FALSE;  // use persistent connections to MySQL database
 $cfg['ForceSSL']                = FALSE;  // whether to force using https
 $cfg['ExecTimeLimit']           = 300;    // maximum execution time in seconds (0 for no limit)
+$cfg['MemoryLimit']             = 0;      // maximum alocated bytes (0 for no limit)
 $cfg['SkipLockedTables']        = FALSE;  // mark used tables, make possible to show
                                           // locked tables (since MySQL 3.23.30)
 $cfg['ShowSQL']                 = TRUE;   // show SQL queries as run