我有一个php脚本，它从6个不同的数据库中收集信息。而且，如果该列表包含50个项目，那么我将有大约50-200个查询可以在while循环中获取所有项目的所有信息。
我今天尝试在PHP中使用不同的“ function（）”以在所有项目上使用，而且我尝试在MySQL中进行内部联接，但没有任何结果。而且我所有的数据库都有类似的名称，例如ID，设备等。
我用于查看页面的PHP代码（稍作改动，只是为了展示我的想法）：
<?php
if(!empty($_GET['tel_sort'])) {
global $conn; //SQL connection
global $device_kost;
$tel_sort = $_GET['tel_sort'];
$result = mysqli_query($conn,"SELECT * FROM $device_kost WHERE id = $tel_sort ORDER BY prod, model");
} elseif(!empty($_GET['prod_sort'])) {
global $conn; //SQL connection
global $device_kost;
$prod_sort = $_GET['prod_sort'];
$result = mysqli_query($conn,"SELECT * FROM $device_kost WHERE prod = '$prod_sort' AND priv = 1 ORDER BY prod, model");
} else {
$result = mysqli_query($conn,"SELECT * FROM $device_kost WHERE priv = 1 ORDER BY prod, model");
}
$telesort = mysqli_query($conn,"SELECT * FROM $device_kost WHERE priv = 1 ORDER BY prod, model");
$prodsort = mysqli_query($conn,"SELECT * FROM $device_kost WHERE priv = 1 GROUP BY prod ORDER BY prod");
function ab($tel) {
global $conn;
global $device_max;
$telque = mysqli_query($conn,"SELECT * FROM $device_max WHERE device = '$tel'");
$telres = mysqli_fetch_assoc($telque);
return $telres;
}
function ts($tel) {
global $conn;
global $device_ts;
$current_date = date("Y-m-d");
$telque = mysqli_query($conn,"SELECT * FROM $device_ts WHERE device = '$tel' AND date_f <= '$current_date' AND date_t >= '$current_date'");
$telres = mysqli_fetch_assoc($telque);
return $telres;
}
function device($tel) {
global $conn;
global $device_kost;
$telque = mysqli_query($conn,"SELECT * FROM $device_kost WHERE type = '1'");
$telres = mysqli_fetch_assoc($telque);
return $telres;
}
function color($price, $kost, $ukon, $ts, $ab = NULL) {
if(!isset($price)) { $priceumoms="0"; } else { $priceumoms = $price; }
$priceumoms = $priceumoms / 1.25;
if($ts=="n/a" || empty($ts)) { $ts="0"; }
$totpris = $priceumoms + $ts;
$db = $totpris - $kost;
$dg = $db * 100;
if ($totpris == 0) {
$dg = "";
} else {
$dg = $dg / $totpris;
}
$dg = round($dg, 2);
$dg = $dg . "%";
if($db>=1200) { $colors="#006600"; } elseif($db>=900) { $colors="#00AA00"; } elseif($db>=700) { $colors="#00FF00"; } elseif($db>=500) { $colors="#FFFF00"; } elseif($db>=300) { $colors="#FF6600"; } else { $colors="#FF0000"; }
if($price==NULL) { $db = "n/a"; $colors = "#888888"; $price = "n/a"; $dg = "n/a";}
$color = array(
"db" => "$db",
"color" => "$colors",
"ts" => "$ts",
"price" => "$price",
"dg" => "$dg", );
return $color;
}
?>
<p>
<table>
<thead>
<tr>
<th>Device sort</th>
</th>Prod sort</th>
</tr>
</thead>
<tbody>
<tr>
<td>
<form action="" method="get">
<?php
if(isset($_GET['ab_sort'])) {
echo "<input type=hidden name=\"ab_sort\" value=\"" . $_GET['ab_sort'] . "\">\n";
}
?>
<select name="dev_sort" style="width: 20em;" onchange="this.form.submit()">
<option value="">Show all</option>
<?php
while($row = mysqli_fetch_array($telesort)) {
$id = $row['id'];
$prod = $row['prod'];
$model = $row['model'];
echo " <option value=\"$id\">$prod $model</option>\n";
}
?>
</select>
<input type=submit value="Update"></form></td>
<td>
<form action="" method="get">
<?php
if(isset($_GET['tel_sort'])) {
echo "<input type=hidden name=\"tel_sort\" value=\"" . $_GET['tel_sort'] . "\">\n";
}
if(isset($_GET['prod_sort'])) {
echo "<input type=hidden name=\"prod_sort\" value=\"" . $_GET['prod_sort'] . "\">\n";
}
?>
<input type=submit value="Oppdater"></form></td>
</tr>
<tr>
<td>
<form action="" method="get">
<?php
if(isset($_GET['ab_sort'])) {
echo "<input type=hidden name=\"ab_sort\" value=\"" . $_GET['ab_sort'] . "\">\n";
}
?>
<select name="prod_sort" style="width: 20em;" onchange="this.form.submit()">
<option value="">Show all</option>
<?php
while($row = mysqli_fetch_array($prodsort)) {
$id = $row['id'];
$prod = $row['prod'];
echo " <option value=\"$prod\">$prod</option>\n";
}
?>
</select>
<input type=submit value="Update"></form></td>
</tr>
</tbody>
</table>
</p>
<?php
if (is_array($ab_vis)) {
$count = count($ab_vis);
} else {
$count = 1;
}
$width = $count*130;
$width = $width+400;
echo "<table border='1' width=\"" . $width . " px\" id=\"mytable\">
<thead>
<tr>
<th><div title=\"$db_table_naming\">prod</th>
<th>model</th>\n";
if($count > 1) {
foreach($ab_vis as $ab) {
echo "<th>" . $ab . "</th>\n";
}
} else {
echo "<th>$ab_vis</th>\n";
}
echo "</tr>
</thead>\n";
$mndpr = "";
while($row = mysqli_fetch_array($result)) {
echo "<tbody>\n<tr class=\"mark\">";
$device = $row['id'];
$ab = ab($device);
$kost = $row['kost'];
$ts = ts($device);
$ukon = $row['ukon'];
if($ukon=="1") { $tdcolor = "#0099FF"; } else { $tdcolor = "#FFFFFF"; }
echo "<td bgcolor=\"" . $tdcolor . "\">" . $row['prod'] . "</td>\n";
echo "<td bgcolor=\"" . $tdcolor . "\"><div title=\"model: " . $row['model'] . " (id:" . $device . ")\">" . $row['model'] . "</a></div></td>\n";
foreach($abo_vis as $abs) {
$ab = "$abs";
$if_model_one = if_model_one($ab, $device);
if(isset($if_model_one[1])) {
$name = $if_model_one[0];
$mndpr = $if_model_one[1];
} else {
$pro = $if_model_one[0];
}
$price = $abo[$ab];
if($ts[$ab] == 1) {
$ts_sum = $ts["ts_sum"];
} else {
$ts_sum = 0;
}
$totpr = $price;
$color = color($price, $kost, $ukon, $ts_sum, $ab);
$kategori_sjekk = kategori_pris($ab);
if (is_numeric($kategori_sjekk)) {
$tellKat = count($kategori_sjekk);
} else {
$tellKat = 0;
}
if( $tellKat > 0 ) {
$deviceAboVis = "";
for ($abo_row = 0; $abo_row < $kat_count; $abo_row++) {
$abo_navn = $kategori_abo_sjekk[$abo_row][0];
$grupris = $kategori_abo_sjekk[$abo_row][1];
$mndpris = $kategori_abo_sjekk[$abo_row][2];
$totalpris = $mndpris*12+$color["pris"];
$mnduten = $grunnpris*12;
$devicepris = $totalpris-$mnduten;
if($color["pris"] == "n/a") {
$totalpris = 0;
$devicepris = 0;
} else {
$deviceAboVis .= "Abo: " . $abo_navn . " ";
$deviceAboVis .= "Mndpris: " . $mndpris . " (" . $grupris . ") ";
$deviceAboVis .= "Totalpris: " . $totalpris . " ";
$deviceAboVis .= "devicepris: " . $devicepris . " ";
}
}
echo "<td bgcolor=\"" . $color['color'] . "\"><div title=\"" . $ab . " model: " . $row['model'] . " Utpris: " . $color['pris'] . " Kost: " . $kost . " TS: " . $color['ts'] . " DB: " . $color['db'] . " DG: " . $color['dg'] . " " . $deviceAboVis . "\">" . $color['pris'] . "</div></td>\n";
} else {
if (!isset($mnduten)) { $mnduten = $prov['grunnpris']*12; $devicepris = $totalpris - $mnduten; }
$abo_short = strtolower(str_replace(' ', '', $ab));
echo "<td bgcolor=\"" . $color['color'] . "\"><!-- t" . $color['tXt'] . " --><div title=\"" . $ab . " model: " . $row['model'] . " Utpris: " . $color['pris'] . " Kost: " . $kost . " Prov: " . $color['prov'] . " IMEI: " . $color['imei'] . " TS: " . $color['ts'] . " DB: " . $color['db'] . " DG: " . $color['dg'] . " Månedspris: " . $prov['mndpris'] . " Totalpris: " . $totalpris . "\">" . $color['pris'] . "</div></td>\n";
}
}
echo "</tr>\n</tbody>";
}
echo "</table>\n";
function kategori_sjekk($kat) {
global $conn;
global $pro;
$telque = mysqli_query($conn,"SELECT * FROM $pro WHERE abonnement = '$kat'");
$telres = mysqli_fetch_assoc($telque);
return $telres;
}
function if_model_one($ab, $device) {
$pro = pro($ab);
if(isset($navn)) {
$return = array($pro, $navn, $mndpris);
} else {
$return = array($pro);
}
return $return;
}
mysqli_close($conn);
MYSQL数据库将如下所示：
CREATE TABLE `device_kost` (
`id` int(10) NOT NULL AUTO_INCREMENT,
`prod` varchar(64) NOT NULL,
`model` text NOT NULL,
`kost` decimal(10,2) NOT NULL,
`ukon` int(10) NOT NULL,
PRIMARY KEY (`id`)
);
INSERT INTO `device_kost` VALUES
(1,'Samsung','Galaxy',1361.00,0),
(2,'Apple','iPhone',2510.00,0);
CREATE TABLE `device_ts` (
`id` int(10) NOT NULL AUTO_INCREMENT,
`device` int(10) DEFAULT NULL,
`nick` varchar(32) DEFAULT NULL,
`ts_sum` int(10) DEFAULT NULL,
`date_f` date NOT NULL,
`date_t` date NOT NULL,
PRIMARY KEY (`id`)
);
INSERT INTO `device_ts` VALUES
(1,1,'gal',200,'2019-01-01','2019-02-28'),
(2,2,'ip',200,'2019-01-01','2019-02-28');
“ device_ts”表还有其他3个类似表。而且我尝试将他们内心联系在一起，但是没有运气。首先，我必须将similair列名称设置为“ as”。
SELECT *
FROM
(
select a.`id` , a.`prod` , a.`model` , a.`kost` , a.`ukon` ,
b.`device` as `device_ts` , b.`ts_sum` , b.`date_f` , b.`date_t` , b.`Ub` as `ubt_ts` ,
c.`device` , c.`Ub` as `ubt_ma`
from
device_kost a
inner join device_ts b on a.`id` = b.`device`
inner join device_max c on a.`id` = c.`device`
) as T
order by T.id Desc limit 10
页面/脚本效果很好。但由于设备过多，大约需要30-40秒。我想，如果我可以创建一个更好的内部联接函数，然后在删除很多不必要的sql查询之后对信息进行排序。