dl

dl is awkward because the filename format is OS-dependent and because it can complain if the extension is already loaded. This wrapper function fixes that:<?phpfunction load_lib($n, $f = null) {    return extension_loaded($n) or dl(((PHP_SHLIB_SUFFIX === 'dll') ? 'php_' : '') . ($f ? $f : $n) . '.' . PHP_SHLIB_SUFFIX);}?>Examples:<?php// ensure we have SSL and MySQL supportload_lib('openssl');load_lib('mysql');// a rare few extensions have a different filename to their extension name, such as the image (gd) library, so we specify them like this:load_lib('gd', 'gd2');?>

<?phpfunction dl_local( $extensionFile ) {   //make sure that we are ABLE to load libraries   if( !(bool)ini_get( "enable_dl" ) || (bool)ini_get( "safe_mode" ) ) {     die( "dh_local(): Loading extensions is not permitted.\n" );   }     //check to make sure the file exists   if( !file_exists( $extensionFile ) ) {     die( "dl_local(): File '$extensionFile' does not exist.\n" );   }      //check the file permissions   if( !is_executable( $extensionFile ) ) {     die( "dl_local(): File '$extensionFile' is not executable.\n" );   } //we figure out the path $currentDir = getcwd() . "/"; $currentExtPath = ini_get( "extension_dir" ); $subDirs = preg_match_all( "/\//" , $currentExtPath , $matches ); unset( $matches );      //lets make sure we extracted a valid extension path   if( !(bool)$subDirs ) {     die( "dl_local(): Could not determine a valid extension path [extension_dir].\n" );   }  $extPathLastChar = strlen( $currentExtPath ) - 1;    if( $extPathLastChar == strrpos( $currentExtPath , "/" ) ) {     $subDirs--;   } $backDirStr = "";      for( $i = 1; $i <= $subDirs; $i++ ) {     $backDirStr .= "..";       if( $i != $subDirs ) {         $backDirStr .= "/";       }   } //construct the final path to load $finalExtPath = $backDirStr . $currentDir . $extensionFile;    //now we execute dl() to actually load the module     if( !dl( $finalExtPath ) ) {     die();   } //if the module was loaded correctly, we must bow grab the module name $loadedExtensions = get_loaded_extensions(); $thisExtName = $loadedExtensions[ sizeof( $loadedExtensions ) - 1 ];   //lastly, we return the extension name  return $thisExtName;}//end dl_local()?>