我已经编写了一些 php 代码,这些代码在效率和加载速度方面可能会有所提高。我该如何改进它?请记住,我绝不擅长编码!
目前页面加载大约需要 5-10 秒。
它在数百个 wordpress 帖子中循环,将它们放在一个新的 mysql 表中并对纬度/经度进行地理编码。它还在检查帖子是否已经在数据库中。
下面是代码:
<?php
require("database.php");
// Opens a connection to a MySQL server
$con = mysql_connect("localhost", $username, $password);
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
mysql_select_db("medicom_wp", $con);
$pages = get_posts(array(
'orderby' => 'title',
'post_type' => 'members',
'numberposts' => 300,
'post_status' => 'any'
));
foreach($pages as $post) {
setup_postdata($post);
$company = get_field('company_name');
$address = get_field('address');
$city = get_field('city');
$post_code = get_field('post_code');
$sql = sprintf("select count('x') as cnt from markers where `name` = '%s'", mysql_real_escape_string($company));
$row_dup = mysql_fetch_assoc(mysql_query($sql,$con));
if ($row_dup['cnt'] == 0) {
mysql_query("INSERT INTO markers (`name`, `address`, `lat`, `lng`, `type`) VALUES ('".$company."', '".$address.", ".$city.", ".$post_code."', '0.0', '0.0', '')");
}
}
wp_reset_query();
define("MAPS_HOST", "maps.google.com");
define("KEY", "");
// Opens a connection to a MySQL server
$connection = mysql_connect("localhost", $username, $password);
if (!$connection) {
die("Not connected : " . mysql_error());
}
// Set the active MySQL database
$db_selected = mysql_select_db($database, $connection);
if (!$db_selected) {
die("Can\'t use db : " . mysql_error());
}
// Select all the rows in the markers table
$query = "SELECT * FROM markers WHERE 1";
$result = mysql_query($query);
if (!$result) {
die("Invalid query: " . mysql_error());
}
// Initialize delay in geocode speed
$delay = 0;
$base_url = "http://" . MAPS_HOST . "/maps/geo?output=xml" . "&key=" . KEY;
// Iterate through the rows, geocoding each address
while ($row = @mysql_fetch_assoc($result)) {
$geocode_pending = true;
while ($geocode_pending) {
$address = $row["address"];
$id = $row["id"];
$request_url = $base_url . "&q=" . urlencode($address);
$xml = simplexml_load_file($request_url) or die("url not loading");
$status = $xml->Response->Status->code;
if (strcmp($status, "200") == 0) {
// Successful geocode
$geocode_pending = false;
$coordinates = $xml->Response->Placemark->Point->coordinates;
$coordinatesSplit = split(",", $coordinates);
// Format: Longitude, Latitude, Altitude
$lat = $coordinatesSplit[1];
$lng = $coordinatesSplit[0];
$query = sprintf("UPDATE markers " .
" SET lat = '%s', lng = '%s' " .
" WHERE id = '%s' LIMIT 1;",
mysql_real_escape_string($lat),
mysql_real_escape_string($lng),
mysql_real_escape_string($id));
$update_result = mysql_query($query);
if (!$update_result) {
die("Invalid query: " . mysql_error());
}
} else if (strcmp($status, "620") == 0) {
// sent geocodes too fast
$delay += 1000;
} else {
// failure to geocode
$geocode_pending = false;
echo "Address " . $address . " failed to geocoded. ";
echo "Received status " . $status . "
\n";
}
usleep($delay);
}
}
?>