简化php代码，按列和排序结果从mysql数据库中选择数据

时间：2015-11-10 11:34:07

标签： php mysql arrays sorting select

我构建了这段代码，从mysql中的2个表中选择250多个值。

我想得到与每个名字相对应的10个数值。每个表（table1和table2）的5个值

从table1中，我选择了5个相应的名称值，并将它们放入一个关联数组中。如果值为“-50”，则取消设置值。

从表2中，名称的5个对应值也对应于table1的值。我将它们放入一个关联数组中，如果值是＆lt; 0.35，我取消了table1的相应值。

我这样做是为了对table1中的5列中的每一列进行排序（删除-50和<0.35值）从高到低。

从数据库中选择数据：

print_r($table1)

Array ( [Aatrox] => Array ( [topratio] => 7.59 [jungleratio] => 0.55 [midratio] => -50 [adcratio] => -50 [supportratio] => -50 ) [Ahri] => Array ( [topratio] => -50 [jungleratio] => -50 [midratio] => 6.85 [adcratio] => -50 [supportratio] => -50 ) ... This continues until last name ) 会返回以下内容：

//I run 5 times this code because there are 5 columns in table1
for($b = 0; $b < 5; $b++){
    //If value corresponding to a name in table1 is -50, unset
    for($a = 0; $a < $numNames; $a++){
        if(($key = array_search(-50, $table1[$names[$a]])) !== false) {
            unset($table1[$names[$a]][$key]);
        }
    }
}

//If value corresponding to a name in table2 (topdiapr) is < than 0.35, unset corresponding value in table1 (topratio)
for($a = 0; $a < $numNames; $a++){
    if(($table2[$names[$a]][topdiapr])<0.35) {
        unset($table1[$names[$a]][topratio]);
    }
}

//Same that previous one but with junglediapr and jungleratio
for($a = 0; $a < $numNames; $a++){
    if(($table2[$names[$a]][junglediapr])<0.35) {
        unset($table1[$names[$a]][jungleratio]);
    }
}

//Same that previous one but with middiapr and midratio
for($a = 0; $a < $numNames; $a++){
    if(($table2[$names[$a]][middiapr])<0.35) {
        unset($table1[$names[$a]][midratio]);
    }
}

//Same that previous one but with adcdiapr and adcratio
for($a = 0; $a < $numNames; $a++){
    if(($table2[$names[$a]][adcdiapr])<0.35) {
        unset($table1[$names[$a]][adcratio]);
    }
}

//Same that previous one but with supportdiapr and supportratio
for($a = 0; $a < $numNames; $a++){
    if(($table2[$names[$a]][supportdiapr])<0.35) {
        unset($table1[$names[$a]][supportratio]);
    }
}

删除-50值和<0.35 

//topratios list. This applies too to jungleratios, midratios, adcratios and supportratios.
$topratios = array();
for($c = 0; $c < $numNames; $c++){
    $topratios[$names[$c]] = $table1[$names[$c]][topratio];
}
$topratios = array_filter($topratios);
arsort($topratios);

最后，我得到每列的数组并将它们从高到低排序：

foreach ($supportratios as $key => $val) {
    echo 'Support: '.$key.'> '.$val.'<br>';
}

运行此，

Support: Brand > 11.54
Support: Blitzcrank > 9.23
Support: Janna > 6.58
Support: Leona > 5.44
Support: Nami > 5.43
Support: Nautilus > 5.23
Support: Zyra > 4.66
Support: Soraka > 3.84
Support: Zilean > 3.71
Support: VelKoz > 2.22
Support: Braum > 2.22
Support: Bard > 2.14
Support: Sona > 1.46
Support: Thresh > 0.59
Support: Taric > 0.45
Support: Morgana > 0.37
Support: Shen > -0.77
Support: Alistar > -1.24
Support: Lulu > -1.7
Support: Kennen > -2.45
Support: Karma > -2.97
Support: Annie > -3.5
Support: Fiddlesticks > -5.38
Support: Tahm Kench > -7.98

正确地返回我想要的内容：

/* Options:
Date: 2015-11-11 09:25:20
Version: 4.046
BaseUrl: http://nlc20030:8008/api

//GlobalNamespace: 
//MakePartial: True
//MakeVirtual: True
//MakeDataContractsExtensible: False
//AddReturnMarker: True
//AddDescriptionAsComments: True
//AddDataContractAttributes: False
//AddIndexesToDataMembers: False
//AddGeneratedCodeAttributes: False
//AddResponseStatus: False
//AddImplicitVersion: 
//InitializeCollections: True
//IncludeTypes: 
//ExcludeTypes: 
//AddDefaultXmlNamespace: http://schemas.servicestack.net/types
*/

using System;
using System.Collections;
using System.Collections.Generic;
using System.Runtime.Serialization;
using ServiceStack;
using ServiceStack.DataAnnotations;
using NLC.Library;
using Waste.Collection;
using Wards;
using Syndication.RSS;
using AbandonedVehicle;
using Search.Address;
using Waste.Collection.Asbestos;
using Waste.Collection.Asbestos.SinceDate;
using Waste.Collection.Bulky;
using Waste.Collection.Bulky.SinceApril;
using Waste.Collection.Bulky.SinceDate;
using Calendar.BinCollection;
using Calendar;
using Search.Civica.Client;
using Search.Civica;
using Dog.Fouling.Cleanse;
using Waste.Litter.Cleanse;
using Search.Confirm;
using CrossSystem;
using Dog;
using DateInfo.English;
using Encrypt;
using Flytipping;
using ;
using Dog.Fouling.Investigate;
using Waste.Litter.Investigate;
using IsValid.NINO.ECS;
using IsValid.NASS;
using IsValid.NINO;
using IsValid;
using IsValid.PostCode;
using IsValid.UPRN;
using IsValid.USRN;
using Job;
using Job.Recent;
using Light;
using LLPG;
using LLPG.Property;
using Requests;
using Noise;
using Odour;
using VictoriaForms;
using Waste.PrivateProperty;
using Encrypt.RC4.Hex;
using Encrypt.RC4;
using Search;
using Smoke;
using SOA.Call.Environment;
using SOA.Call.Environment.Operations;
using SOA.Call.Environment.Operations.System.IsError;
using SOA.Call.Environment.Operation.System.IsError.StartRecord;
using SOA.Call.Environment.Operations.System;
using SOA.Message;
using SOA;
using Search.Street;
using Waste.Collection.Tomorrow.Feed;
using Waste.Collections.Tomorrow;

我想知道是否有更快更简单的方法来实现这一点。此外，我想知道是否有任何替代方法可以执行250多个查询。

2 个答案:

答案 0 :(得分：2)

我真的不知道这是否有帮助，但也许它可能...... 

$names=array('aatrox', 'ahri', 'akali', 'alistar', 'amumu', 'anivia', 'annie', 'ashe', 'azir', 'bard', 
        'blitzcrank', 'brand', 'braum', 'caitlyn', 'cassiopeia', 'chogath', 'corki', 'darius', 'diana', 'drmundo', 
        'draven', 'ekko', 'elise', 'evelynn', 'ezreal', 'fiddlesticks', 'fiora', 'fizz', 'galio', 'gangplank', 
        'garen', 'gnar', 'gragas', 'graves', 'hecarim', 'heimerdinger', 'irelia', 'janna', 'jarvaniv', 'jax', 
        'jayce', 'jinx', 'kalista', 'karma', 'karthus', 'kassadin', 'katarina', 'kayle', 'kennen', 'khazix', 
        'kogmaw', 'leblanc', 'leesin', 'leona', 'lissandra', 'lucian', 'lulu', 'lux', 'malphite', 'malzahar', 
        'maokai', 'masteryi', 'missfortune', 'mordekaiser', 'morgana', 'nami', 'nasus', 'nautilus', 'nidalee', 
        'nocturne', 'nunu', 'olaf', 'orianna', 'pantheon', 'poppy', 'quinn', 'rammus', 'reksai', 'renekton', 
        'rengar', 'riven', 'rumble', 'ryze', 'sejuani', 'shaco', 'shen', 'shyvana', 'singed', 'sion', 'sivir', 
        'skarner', 'sona', 'soraka', 'swain', 'syndra', 'tahmkench', 'talon', 'taric', 'teemo', 'thresh', 
        'tristana', 'trundle', 'tryndamere', 'twistedfate', 'twitch', 'udyr', 'urgot', 'varus', 'vayne', 
        'veigar', 'velkoz', 'vi', 'viktor', 'vladimir', 'volibear', 'warwick', 'wukong', 'xerath', 'xinzhao', 
        'yasuo', 'yorick', 'zac', 'zed', 'ziggs', 'zilean', 'zyra');



$sql1="select `name`, `topratio`, `jungleratio`, `midratio`, `adcratio`, `supportratio` 
        from `table1` 
        where `name` in ('". implode( "','", $names ) ."')
        and ( `topratio` != -50 and `topratio` >= 0.35 )
        and ( `jungleratio` != -50 and `jungleratio` >= 0.35 )
        and ( `midratio` != -50 and `midratio` >= 0.35 )
        and ( `adcratio` != -50 and `adcratio` >= 0.35 )
        and ( `supportratio` != -50 and `supportratio` >= 0.35 );";



$sql2="select `name`, `topdiapr`, `junglediapr`, `middiapr`, `adcdiapr`, `supportdiapr` 
    from `table2` 
    where `name` in ('". implode( "','", $names ) ."')
    and ( `topratio` != -50 and `topratio` >= 0.35 )
    and ( `junglediapr` != -50 and `junglediapr` >= 0.35 )
    and ( `middiapr` != -50 and `middiapr` >= 0.35 )
    and ( `adcdiapr` != -50 and `adcdiapr` >= 0.35 )
    and ( `supportdiapr` != -50 and `supportdiapr` >= 0.35 )";

答案 1 :(得分：1)

我建议你添加一些规范化，然后使用一些简单的连接，它会大大简化你的生活。

表格结构

CREATE TABLE `champs` (
  `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
  `title` varchar(100) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT

CREATE TABLE `ratios_a` (
  `champ_id` int(11) unsigned NOT NULL,
  `top_r` int(11) DEFAULT NULL,
  `jungle_r` int(11) DEFAULT NULL,
  `mid_r` int(11) DEFAULT NULL,
  `adc_r` int(11) DEFAULT NULL,
  `support_r` int(11) DEFAULT NULL,
  PRIMARY KEY (`champ_id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1

CREATE TABLE `ratios_b` (
  `champ_id` int(11) unsigned NOT NULL,
  `top_diapr` int(11) DEFAULT NULL,
  `jungle_diapr` int(11) DEFAULT NULL,
  `mid_diapr` int(11) DEFAULT NULL,
  `adc_diapr` int(11) DEFAULT NULL,
  `support_diapr` int(11) DEFAULT NULL,
  PRIMARY KEY (`champ_id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1

使用PDO

，根据条件选择所有内容

您可以在任何查询中添加ORDER BY以实现任何排序。 

$dsn = 'mysql:dbname=lol;host=127.0.0.1';
$user = 'root';
$password = '';
$dbh = new PDO($dsn, $user, $password);

$sql = 'SELECT c.title, a.top_r, a.jungle_r, a.mid_r, a.adc_r, a.support_r, 
    b.top_diapr, b.jungle_diapr, b.mid_diapr, b.adc_diapr, b.support_diapr
FROM champs c
LEFT JOIN ratios_a a ON c.id=a.champ_id
LEFT JOIN ratios_b b ON c.id=b.champ_id
WHERE a.top_r != -50 AND a.jungle_r != -50 AND
a.mid_r != -50 AND a.adc_r !=-50 AND a.support_r != -50 AND
a.top_r >= 0.35 AND a.jungle_r >= 0.35 AND
a.mid_r >= 0.35 AND a.adc_r >= 0.35 AND a.support_r >= 0.35
AND
b.top_diapr != -50 AND b.jungle_diapr != -50 AND
b.mid_diapr != -50 AND b.adc_diapr !=-50 AND b.support_diapr != -50 AND
b.top_diapr >= 0.35 AND b.jungle_diapr >= 0.35 AND
b.mid_diapr >= 0.35 AND b.adc_diapr >= 0.35 AND b.support_diapr >= 0.35';

foreach($dbh->query($sql, PDO::FETCH_ASSOC) as $result){
    print_r($result);
}
/* will output something like this
Array
(
    [title] => yasuo
    [top_r] => 5
    [jungle_r] => 10
    [mid_r] => 17
    [adc_r] => 13
    [support_r] => 1
    [top_diapr] => 19
    [jungle_diapr] => 0
    [mid_diapr] => 12
    [adc_diapr] => 10
    [support_diapr] => 20
)
Array
(
    [title] => yorick
    [top_r] => 3
    [jungle_r] => 13
    [mid_r] => 9
    [adc_r] => 9
    [support_r] => 2
    [top_diapr] => 13
    [jungle_diapr] => 15
    [mid_diapr] => 8
    [adc_diapr] => 8
    [support_diapr] => 20
)
*/

如果您只需要一些特定的比率，或者您想要特定冠军的统计数据，例如support_ratio和support_diapr，只需运行不同的查询。

$sql = 'SELECT c.title, a.support_r, b.support_diapr
FROM champs c
LEFT JOIN ratios_a a ON c.id=a.champ_id
LEFT JOIN ratios_b b ON c.id=b.champ_id
WHERE c.id = 62 AND 
a.support_r != -50 AND a.support_r >= 0.35 AND
b.support_diapr != -50 AND b.support_diapr >= 0.35';


foreach($dbh->query($sql, PDO::FETCH_ASSOC) as $result){
    print_r($result);
}

/* will output this
Array
(
    [title] => masteryi
    [support_r] => 5
    [support_diapr] => 8
)
*/
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