You mean the script? Ok there is a main script and a wrapper class around the mysql functions. I have tracked the error down to the mysql_query call in the wrapper class. This looks like a lot of code, but what what I am having trouble with is very trivial as I explained. I'm certain its a random memory error since it happens at different points. WHat I'm really looking for is some general advise on debuging the call to mysql_query in the absence of any error messages Thanks again.. Main Script: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <title>Untitled Document</title> </head> <body> <?php require_once ('../wp-blog-header.php'); $supid="puck"; $catprefix='111'; $xmlurl='http://dropship.puckator.co.uk/xml_feed.php?email=DELETED&password=DELETED&products&fields=pid|name|pev|f|wl|lfscd|sd|ld|dcc|dcev|sl|d|piu|descriptors|categories&since=' . $_GET['since']; $xml = simplexml_load_file($xmlurl); $filename = 'update.sql'; $fp = fopen($filename, "w"); fputs($fp,"-- new products or updated products\n"); // Create/Update product entries foreach ($xml->product as $product ) { $sup_prod_id = $supid . "_" . $product->pid; $count = $wpdb->get_var("SELECT count(*) FROM wp_postmeta WHERE meta_key='sup_prod_id' AND meta_value='$sup_prod_id'"); if($count == 0) { $post_name = strtolower($product->name); $post_name = preg_replace("/[^0-9a-z ]/i",'', $post_name); $post_name = preg_replace("/ /", "-", $post_name); $post_name = preg_replace("/--/", "-", $post_name); fputs($fp,"INSERT INTO wp_posts ( post_author, post_title, post_content, post_excerpt, post_name, post_date, post_modified ) VALUES ('1','$product->name','$product->ld','$product->sd','$post_name','$product->lfscd','$product->lfscd');\n"); $postid = mysql_insert_id(); fputs($fp,"INSERT INTO wp_postmeta ( post_id, meta_key, meta_value) VALUES ('$postid', 'sup_prod_id', '$sup_prod_id');\n"); fputs($fp,"INSERT INTO wp_postmeta ( post_id, meta_key, meta_value) VALUES ('$postid', 'price_ex_vat', '$product->pev');\n"); fputs($fp,"INSERT INTO wp_postmeta ( post_id, meta_key, meta_value) VALUES ('$postid', 'for_sale', '$product->f');\n"); fputs($fp,"INSERT INTO wp_postmeta ( post_id, meta_key, meta_value) VALUES ('$postid', 'warning_level', '$product->wl');\n"); fputs($fp,"INSERT INTO wp_postmeta ( post_id, meta_key, meta_value) VALUES ('$postid', 'last_for_sale_change', '$product->lfscd');\n"); fputs($fp,"INSERT INTO wp_postmeta ( post_id, meta_key, meta_value) VALUES ('$postid', 'del_charge_code', '$product->dcc');\n"); fputs($fp,"INSERT INTO wp_postmeta ( post_id, meta_key, meta_value) VALUES ('$postid', 'del_charge_ex_vat', '$product->dcev');\n"); fputs($fp,"INSERT INTO wp_postmeta ( post_id, meta_key, meta_value) VALUES ('$postid', 'stock_level', '$product->sl');\n"); fputs($fp,"INSERT INTO wp_postmeta ( post_id, meta_key, meta_value) VALUES ('$postid', 'dimensions', '$product->d');\n"); $n=1; foreach ( $product->piu as $piu) { fputs($fp,"INSERT INTO wp_postmeta ( post_id, meta_key, meta_value) VALUES ('$postid', 'prod_img_$n', '$piu');\n"); $n++; } foreach ( $product->categories->cat_id as $cat_id ) { fputs($fp,"INSERT INTO wp_post2cat ( post_id, category_id ) VALUES ('$postid', '$catprefix$cat_id');\n"); } } else { $postid = $wpdb->get_var("SELECT post_id FROM wp_postmeta WHERE meta_key='sup_prod_id' AND meta_value='$sup_prod_id'"); $datestr = date("Y-m-d H:i:s"); fputs($fp,"UPDATE wp_posts SET post_modified='$datestr' WHERE ID='$postid';\n"); fputs($fp,"UPDATE wp_postmeta SET meta_value='$product->wl' WHERE post_id='$postid' AND meta_key='warning_level';\n"); fputs($fp,"UPDATE wp_postmeta SET meta_value='$product->f' WHERE post_id='$postid' AND meta_key='for_sale';\n"); fputs($fp,"UPDATE wp_postmeta SET meta_value='$product->s1' WHERE post_id='$postid' AND meta_key='stock_level';\n"); } } fclose($fp); ?> <p>Created or updated product entries</p> </body> </html> **** WRAPPER CLASS class wpdb { var $show_errors = true; var $num_queries = 0; var $last_query; var $col_info; var $queries; // Our tables var $posts; var $users; var $categories; var $post2cat; var $comments; var $links; var $linkcategories; var $options; var $optiontypes; var $optionvalues; var $optiongroups; var $optiongroup_options; var $postmeta; // ================================================================== // DB Constructor - connects to the server and selects a database function wpdb($dbuser, $dbpassword, $dbname, $dbhost) { $this->dbh = @mysql_connect($dbhost, $dbuser, $dbpassword); if (!$this->dbh) { $this->bail(" <h1>Error establishing a database connection</h1> <p>This either means that the username and password information in your <code>wp-config.php</code> file is incorrect or we can't contact the database server at <code>$dbhost</code>. This could mean your host's database server is down.</p> <ul> <li>Are you sure you have the correct username and password?</li> <li>Are you sure that you have typed the correct hostname?</li> <li>Are you sure that the database server is running?</li> </ul> <p>If you're unsure what these terms mean you should probably contact your host. If you still need help you can always visit the <a href='http://wordpress.org/support/'>WordPress Support Forums</a>.</p> "); } $this->select($dbname); } // ================================================================== // Select a DB (if another one needs to be selected) function select($db) { if (!@mysql_select_db($db, $this->dbh)) { $this->bail(" <h1>Can’t select database</h1> <p>We were able to connect to the database server (which means your username and password is okay) but not able to select the <code>$db</code> database.</p> <ul> <li>Are you sure it exists?</li> <li>On some systems the name of your database is prefixed with your username, so it would be like username_wordpress. Could that be the problem?</li> </ul> <p>If you don't know how to setup a database you should <strong>contact your host</strong>. If all else fails you may find help at the <a href='http://wordpress.org/support/'>WordPress Support Forums</a>.</p>"); } } // ==================================================================== // Format a string correctly for safe insert under all PHP conditions function escape($string) { return addslashes( $string ); // Disable rest for now, causing problems if( !$this->dbh || version_compare( phpversion(), '4.3.0' ) == '-1' ) return mysql_escape_string( $string ); else return mysql_real_escape_string( $string, $this->dbh ); } // ================================================================== // Print SQL/DB error. function print_error($str = '') { global $EZSQL_ERROR; if (!$str) $str = mysql_error(); $EZSQL_ERROR[] = array ('query' => $this->last_query, 'error_str' => $str); $str = htmlspecialchars($str, ENT_QUOTES); $query = htmlspecialchars($this->last_query, ENT_QUOTES); // Is error output turned on or not.. if ( $this->show_errors ) { // If there is an error then take note of it print "<div id='error'> <p class='wpdberror'><strong>WordPress database error:</strong> [$str]<br /> <code>$query</code></p> </div>"; } else { return false; } } // ================================================================== // Turn error handling on or off.. function show_errors() { $this->show_errors = true; } function hide_errors() { $this->show_errors = false; } // ================================================================== // Kill cached query results function flush() { $this->last_result = null; $this->col_info = null; $this->last_query = null; } // ================================================================== // Basic Query - see docs for more detail function query($query) { echo("<p> before flush $query</p>"); // initialise return $return_val = 0; $this->flush(); // Log how the function was called $this->func_call = "\$db->query(\"$query\")"; // Keep track of the last query for debug.. $this->last_query = $query; // Perform the query via std mysql_query function.. if (SAVEQUERIES) $this->timer_start(); echo("<p> after flush $query</p>"); $this->result = @mysql_query($query, $this->dbh); ++$this->num_queries; if (SAVEQUERIES) $this->queries[] = array( $query, $this->timer_stop() ); // If there is an error then take note of it.. if ( mysql_error() ) { $this->print_error(); return false; } if ( preg_match("/^\\s*(insert|delete|update|replace) /i",$query) ) { $this->rows_affected = mysql_affected_rows(); // Take note of the insert_id if ( preg_match("/^\\s*(insert|replace) /i",$query) ) { $this->insert_id = mysql_insert_id($this->dbh); } // Return number of rows affected $return_val = $this->rows_affected; } else { $i = 0; while ($i < @mysql_num_fields($this->result)) { $this->col_info[$i] = @mysql_fetch_field($this->result); $i++; } $num_rows = 0; while ( $row = @mysql_fetch_object($this->result) ) { $this->last_result[$num_rows] = $row; $num_rows++; } @mysql_free_result($this->result); // Log number of rows the query returned $this->num_rows = $num_rows; // Return number of rows selected $return_val = $this->num_rows; } return $return_val; } // ================================================================== // Get one variable from the DB - see docs for more detail function get_var($query=null, $x = 0, $y = 0) { $this->func_call = "\$db->get_var(\"$query\",$x,$y)"; if ( $query ) $this->query($query); // Extract var out of cached results based x,y vals if ( $this->last_result[$y] ) { $values = array_values(get_object_vars($this->last_result[$y])); } // If there is a value return it else return null return (isset($values[$x]) && $values[$x]!=='') ? $values[$x] : null; } // ================================================================== // Get one row from the DB - see docs for more detail function get_row($query = null, $output = OBJECT, $y = 0) { $this->func_call = "\$db->get_row(\"$query\",$output,$y)"; if ( $query ) $this->query($query); if ( $output == OBJECT ) { return $this->last_result[$y] ? $this->last_result[$y] : null; } elseif ( $output == ARRAY_A ) { return $this->last_result[$y] ? get_object_vars($this->last_result[$y]) : null; } elseif ( $output == ARRAY_N ) { return $this->last_result[$y] ? array_values(get_object_vars($this->last_result[$y])) : null; } else { $this->print_error(" \$db->get_row(string query, output type, int offset) -- Output type must be one of: OBJECT, ARRAY_A, ARRAY_N"); } } // ================================================================== // Function to get 1 column from the cached result set based in X index // se docs for usage and info function get_col($query = null , $x = 0) { if ( $query ) $this->query($query); // Extract the column values for ( $i=0; $i < count($this->last_result); $i++ ) { $new_array[$i] = $this->get_var(null, $x, $i); } return $new_array; } // ================================================================== // Return the the query as a result set - see docs for more details function get_results($query = null, $output = OBJECT) { $this->func_call = "\$db->get_results(\"$query\", $output)"; if ( $query ) $this->query($query); // Send back array of objects. Each row is an object if ( $output == OBJECT ) { return $this->last_result; } elseif ( $output == ARRAY_A || $output == ARRAY_N ) { if ( $this->last_result ) { $i = 0; foreach( $this->last_result as $row ) { $new_array[$i] = (array) $row; if ( $output == ARRAY_N ) { $new_array[$i] = array_values($new_array[$i]); } $i++; } return $new_array; } else { return null; } } } // ================================================================== // Function to get column meta data info pertaining to the last query // see docs for more info and usage function get_col_info($info_type = 'name', $col_offset = -1) { if ( $this->col_info ) { if ( $col_offset == -1 ) { $i = 0; foreach($this->col_info as $col ) { $new_array[$i] = $col->{$info_type}; $i++; } return $new_array; } else { return $this->col_info[$col_offset]->{$info_type}; } } } function timer_start() { $mtime = microtime(); $mtime = explode(' ', $mtime); $this->time_start = $mtime[1] + $mtime[0]; return true; } function timer_stop($precision = 3) { $mtime = microtime(); $mtime = explode(' ', $mtime); $time_end = $mtime[1] + $mtime[0]; $time_total = $time_end - $this->time_start; return $time_total; } function bail($message) { // Just wraps errors in a nice header and footer if ( !$this->show_errors ) return false; header( 'Content-Type: text/html; charset=utf-8'); echo <<<HEAD <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>WordPress › Error</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <style media="screen" type="text/css"> <!-- html { background: #eee; } body { background: #fff; color: #000; font-family: Georgia, "Times New Roman", Times, serif; margin-left: 25%; margin-right: 25%; padding: .2em 2em; } h1 { color: #006; font-size: 18px; font-weight: lighter; } h2 { font-size: 16px; } p, li, dt { line-height: 140%; padding-bottom: 2px; } ul, ol { padding: 5px 5px 5px 20px; } #logo { margin-bottom: 2em; } --> </style> </head> <body> <h1 id="logo"><img alt="WordPress" src="http://static.wordpress.org/logo.png" /></h1> HEAD; echo $message; echo "</body></html>"; die(); } } $wpdb = new wpdb(DB_USER, DB_PASSWORD, DB_NAME, DB_HOST); ?>
