根据平均值在php中排名

本文介绍了根据平均值在php中排名的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我已经尝试了一段时间，但仍然被困在这里。实际上，我需要从平均值中获得排名。在这里我的结果

I've been trying for a while but still, I'm stuck here. Actually I need to get rank from average values. Here my result

Average Rank 39 39 rank is 1 32 32 rank is 1 51 51 rank is 1 57 57 rank is 1

我真正需要的是

Average Rank 39 3 32 4 51 2 57 1

我尝试了几种方法，但似乎没有任何效果。 Btw这是我的代码

I've tried several method, but nothing seem to be works. Btw Here's my code

<?php $avg = ($sumc)/($data['total']); echo number_format((float)$avg, 2, ',', ''); ?> <?php $array = array($avg); $i=1; foreach($array as $key=>$value) { $max = max($array); echo "\n".$max." rank is ". $i."\n"; $keys = array_search($max, $array); unset($array[$keys]); if(sizeof($array) >0) if(!in_array($max,$array)) $i++; }

这是完整的代码

<?php $nama_mapel=$ux['nama_mapel']; $an = mysql_fetch_array(mysql_query("SELECT*FROM mapel where kode_kelas='$kode_kelas' and nama_mapel='$nama_mapel'"))?> <text style="display:none;"><?php if($NILAI_AKHIR!=0){$NILAI_AKHIR4=substr($NILAI_AKHIR/100*4,0,4); echo $NILAI_AKHIR4;} ?></text> <tr> <td width="5%" class="ki1234" height="auto" valign="center" align="center"><?php echo $no++ ;?></td> <td width="40%" class="ki1234" height="auto" valign="center" align="left">&nbsp;<?php echo $mmm['nama'];?></td> <td width="10%" class="ki1234" height="auto" valign="center" align="center"><?php echo $nis; ?></td> <?php $mapelz=mysql_query("SELECT*FROM mapel where kode_kelas='$kode_kelas' and id_tp='$id_tp'"); $arrg=[]; while($uxe = mysql_fetch_array($mapelz)){ $id_mapel=$uxe['id_mapel']; //awal nilai akhir// $dren = mysql_query("SELECT*FROM nilai_siswa,data_siswa,penilaian_judul where nilai_siswa.id_penilaian_judul=penilaian_judul.id_penilaian_judul and nilai_siswa.nis=data_siswa.nis and nilai_siswa.nis=$nis and penilaian_judul.id_mapel=$id_mapel and penilaian_judul.id_semester='$id_semester' and penilaian_judul.id_tp='$id_tp' order by data_siswa.id_siswa asc"); $jm=mysql_num_rows($dren); $jumlah_tugas=$jm; if($jm==0){$jumlah="1";} else {$jumlah=$jm; }; $queryj=mysql_query("SELECT sum(n3_100) as rn3_100 FROM nilai_siswa,penilaian_judul where nilai_siswa.id_penilaian_judul=penilaian_judul.id_penilaian_judul and nilai_siswa.nis=$nis and penilaian_judul.id_mapel=$id_mapel and penilaian_judul.id_semester='$id_semester' and penilaian_judul.id_tp='$id_tp'"); while($hasil=mysql_fetch_array($queryj)) {$rn3_100=substr($hasil['rn3_100']/$jumlah,0,5); $RATA_TUGAS=$rn3_100;} $dren = mysql_query("SELECT*FROM nilai_siswa2,data_siswa,penilaian_judul where nilai_siswa2.id_penilaian_judul=penilaian_judul.id_penilaian_judul and nilai_siswa2.nis=data_siswa.nis and nilai_siswa2.nis=$nis and penilaian_judul.id_mapel=$id_mapel and nilai_siswa2.jenis=2 and penilaian_judul.id_semester='$id_semester' and penilaian_judul.id_tp='$id_tp' order by data_siswa.id_siswa asc"); $jm=mysql_num_rows($dren); $jumlah_uh=$jm; if($jm==0){$jumlah="1";} else {$jumlah=$jm;}; $queryj=mysql_query("SELECT sum(n_100) as rn_100 FROM nilai_siswa2,penilaian_judul where nilai_siswa2.id_penilaian_judul=penilaian_judul.id_penilaian_judul and nilai_siswa2.nis=$nis and penilaian_judul.id_mapel=$id_mapel and nilai_siswa2.jenis=2 and penilaian_judul.id_semester='$id_semester' and penilaian_judul.id_tp='$id_tp'"); while($hasil=mysql_fetch_array($queryj)) {$rn_100=substr($hasil['rn_100']/$jumlah,0,5); $RATA_UH= $rn_100;} $dren = mysql_query("SELECT*FROM nilai_siswa2,data_siswa,penilaian_judul where nilai_siswa2.id_penilaian_judul=penilaian_judul.id_penilaian_judul and nilai_siswa2.nis=data_siswa.nis and nilai_siswa2.nis=$nis and penilaian_judul.id_mapel=$id_mapel and nilai_siswa2.jenis=3 and penilaian_judul.id_semester='$id_semester' and penilaian_judul.id_tp='$id_tp' order by data_siswa.id_siswa asc"); $jm=mysql_num_rows($dren); $jumlah_uts=$jm; if($jm==0){$jumlah="1";} else {$jumlah=$jm;}; $queryj=mysql_query("SELECT sum(n_100) as rn_100 FROM nilai_siswa2,penilaian_judul where nilai_siswa2.id_penilaian_judul=penilaian_judul.id_penilaian_judul and nilai_siswa2.nis=$nis and penilaian_judul.id_mapel=$id_mapel and nilai_siswa2.jenis=3 and penilaian_judul.id_semester='$id_semester' and penilaian_judul.id_tp='$id_tp'"); while($hasil=mysql_fetch_array($queryj)) {$rn_100=substr($hasil['rn_100']/$jumlah,0,5); $RATA_UTS= $rn_100;} $dren = mysql_query("SELECT*FROM nilai_siswa2,data_siswa,penilaian_judul where nilai_siswa2.id_penilaian_judul=penilaian_judul.id_penilaian_judul and nilai_siswa2.nis=data_siswa.nis and nilai_siswa2.nis=$nis and penilaian_judul.id_mapel=$id_mapel and nilai_siswa2.jenis=4 and penilaian_judul.id_semester='$id_semester' and penilaian_judul.id_tp='$id_tp' order by data_siswa.id_siswa asc"); $jm=mysql_num_rows($dren); $jumlah_us=$jm; if($jm==0){$jumlah="1";} else {$jumlah=$jm;}; $queryj=mysql_query("SELECT sum(n_100) as rn_100 FROM nilai_siswa2,penilaian_judul where nilai_siswa2.id_penilaian_judul=penilaian_judul.id_penilaian_judul and nilai_siswa2.nis=$nis and penilaian_judul.id_mapel=$id_mapel and nilai_siswa2.jenis=4 and penilaian_judul.id_semester='$id_semester' and penilaian_judul.id_tp='$id_tp'"); while($hasil=mysql_fetch_array($queryj)) {$rn_100=substr($hasil['rn_100']/$jumlah,0,5); $RATA_US= $rn_100;} if(!isset($RATA_TUGAS)){$RATA_TUGAS2=0;}else{$RATA_TUGAS2=$RATA_TUGAS;}; if(!isset($RATA_UH)){$RATA_UH2=0;}else{$RATA_UH2=$RATA_UH;}; if(!isset($RATA_UTS)){$RATA_UTS2=0;}else{$RATA_UTS2=$RATA_UTS;}; if(!isset($RATA_US)){$RATA_US2=0;}else{$RATA_US2=$RATA_US;}; $jumlahc=($persen['tugas']*$RATA_TUGAS2)/100+($persen['uh']*$RATA_UH2)/100+($persen['uts']*$RATA_UTS2)/100+($persen['us']*$RATA_US2)/100; if($jumlah_tugas!=0){$k=1;} else {$k=0;}; if($jumlah_uh!=0){$l=1;} else {$l=0;}; if($jumlah_uts!=0){$m=1;} else {$m=0;}; if($jumlah_us!=0){$n=1;} else {$n=0;}; $JUMLAH_PERSEN1=($persen['tugas']*$k)+($persen['uh']*$l)+($persen['uts']*$m)+($persen['us']*$n); if($JUMLAH_PERSEN1==0){$JUMLAH_PERSEN=1;}else{$JUMLAH_PERSEN=$JUMLAH_PERSEN1;}; $NILAI_AKHIRg=substr(($jumlahc/$JUMLAH_PERSEN)*100,0,5); $nile= $NILAI_AKHIRg; $arrg[] = $NILAI_AKHIRg;} ?> <?php $p = mysql_fetch_array(mysql_query("SELECT * FROM peringkat WHERE kode_kelas='$kode_kelas' and nis='$nis'and id_tp='$id_tp'")); ?> <text style="display:none;"> <?php $sumc = 0; $output = ""; while($element = array_shift($arrg)){$sumc += $element; $output .= $element; if(sizeof($arrg) > 0){ $output .= " + ";}} echo $output . PHP_EOL;?></text> <td width="15%" class="ki1234" height="auto" valign="center" align="center"><?php echo $sumc;?></td> <text style="display:none;"><?php $result=mysql_query("SELECT count(*) as total FROM mapel WHERE kode_kelas='$kode_kelas' and kel!=3"); $data=mysql_fetch_assoc($result); echo $data['total'];?></text> <td width="15%" class="ki1234" height="auto" valign="center" align="center"><?php $avg = ($sumc)/($data['total']); echo number_format((float)$avg, 2, ',', ''); ?></td> <td width="15%" class="ki1234" height="auto" valign="center" align="center"><?php $array = array($avg); $i=1; foreach($array as $key=>$value) { $max = max($array); echo "\n".$max." rank is ". $i."\n"; $keys = array_search($max, $array); unset($array[$keys]); if(sizeof($array) >0) if(!in_array($max,$array)) $i++; } ?></td> </tr> <?php }?>

需要您的帮助。任何人..？！

Need Your help.. Anyone..?!

推荐答案

<?php $avg = ($sumc)/($data['total']); echo number_format((float)$avg, 2, ',', ''); ?> <?php $array = array($avg); // useless $i=1; foreach($array as $key=>$value) // also useless, you never use these variables, and since $array contains only one entry, there is no need to foreach it { $max = max($array); echo "\n".$max." rank is ". $i."\n"; $keys = array_search($max, $array); unset($array[$keys]); if(sizeof($array) >0) if(!in_array($max,$array)) $i++; }

让我们清理一下：

<?php $avg = ($sumc)/($data['total']); echo number_format((float)$avg, 2, ',', ''); ?> <?php $max = $avg; // That's actually what you were doing. Cleaning the code makes it obvious, that's all echo "\n".$max." rank is ". $i."\n"; $keys = array_search($max, $array); unset($array[$keys]); if(sizeof($array) >0) if(!in_array($max,$array)) $i++; }

代码仍然有错误，但是我们纠正的越多，其设计就越多缺陷的出现，因此可纠正的程度越低。 在我看来，您应该看一下代码，想出一种方法将所需的所有值放入$ array中，以便然后可以计算所需的数据

The code still has errors, but the more we correct, the more its design flaws appear, and the less it's therefore correctable. You should, in my opinion, look at that code, figure a way to put all the values you want to have in $array in it so that then you can compute the datas you need.