我的代码中有一些问题，当我试图给数组变量位置赋值时。代码正在运行，但有很多通知说“未定义的偏移量”这是循环，当我尝试循环我的变量。
$query_jur="select * from t_jurusan order by id_jurusan";
$sql_jur=mysql_query($query_jur);
if (mysql_num_rows($sql_jur)==0) {
echo "kosong";
$jml_jur=mysql_num_rows($sql_jur);
} else {
$jml_jur=mysql_num_rows($sql_jur);
echo "jumlah jurusan yang diinputkan pada tabel jurusan adalah : ",$jml_jur;
echo "<br>";
}
$query_ins="select * from t_ins_akreditasi_jur order by id_kriteria";
$sql_ins=mysql_query($query_ins);
if (mysql_num_rows($sql_ins)==0) {
$jml_ins=mysql_num_rows($sql_ins);
echo "kosong";
} else {
$jml_ins=mysql_num_rows($sql_ins);
echo "jumlah Instrumen yang diinputkan pada tabel Instrumen adalah : ",$jml_ins;
}
$query_select_hasil="select t_hasil_ins.id_jurusan, t_hasil_ins.id_kriteria, t_ins_akreditasi_jur.id_sub, t_hasil_ins.nilai, t_hasil_ins.hasil, t_hasil_ins.ket from t_hasil_ins, t_ins_akreditasi_jur where t_ins_akreditasi_jur.id_kriteria=t_hasil_ins.id_kriteria order by id_kriteria";
$sql_hasil=mysql_query($query_select_hasil);
$data_hasil=mysql_fetch_array($sql_hasil);
echo $data_hasil['id_sub'];
$query_jurusan="select * from t_jurusan order by id_jurusan";
$sql_jurusan=mysql_query($query_jurusan);
$i=1;
$index_jur=array();
$index_sub=array();
$index_jur_sub=array();
$index_bobot=array();
$index_nilai=array();
$nilai_sementara=array();
$index_nilai_akhir_sub=array();
$index_nilai_akhir_jur=array();
$sql_del1 = mysql_query("delete from t_hasil_rank_instrumen_standar ") or die(mysql_error());
while ($data_jurusan=mysql_fetch_array($sql_jurusan)){
$index_jur[$i]=$data_jurusan['id_jurusan'];
echo "<br>";
echo "id jurusan : ",$index_jur[$i];
$query_sub="select * from t_sub_kriteria order by id_sub";
$sql_sub=mysql_query($query_sub);
$j=1;
while ($data_sub=mysql_fetch_array($sql_sub)){
$index_sub[$j]=$data_sub['id_sub'];
echo "-->";
echo "id sub : ",$index_sub[$j];
$query_jur_sub="select t_hasil_ins.id_jurusan, t_hasil_ins.id_kriteria, t_ins_akreditasi_jur.id_sub, t_hasil_ins.nilai, t_hasil_ins.hasil, t_hasil_ins.ket from t_hasil_ins, t_ins_akreditasi_jur where t_ins_akreditasi_jur.id_kriteria=t_hasil_ins.id_kriteria and t_hasil_ins.id_jurusan='$index_jur[$i]' and id_sub='$index_sub[$j]' order by id_kriteria";
$sql_jur_sub=mysql_query($query_jur_sub);
$k=1;
$index_nilai_akhir_sub[$i][$j]=0;
while ($data_jur_sub=mysql_fetch_array($sql_jur_sub)){
$index_jur_sub[$k]=$data_jur_sub['id_kriteria'];
$index_nilai[$k]=$data_jur_sub['nilai'];
$keterangan[$k]=$data_jur_sub['ket'];
echo "<br>";
echo " ( ",$index_jur_sub[$k]," ) ";
$query_bobot="select * from t_ins_akreditasi_jur where id_kriteria='$index_jur_sub[$k]'";
$sql_bobot=mysql_query($query_bobot);
$data_bobot=mysql_fetch_array($sql_bobot);
$index_bobot[$k]=$data_bobot['bobot'];
echo "<br>";
echo " dengan bobot ",$index_bobot[$k];
echo "<br>";
echo " dan nilai ",$index_nilai[$k], "tapi, keteranganya ",$keterangan[$k] ;
echo "<br>";
if ($keterangan[$k]=="0"){
$nilai_sementara[$k]=$index_bobot[$k]*0;
} else {
$nilai_sementara[$k]=$index_bobot[$k]*$index_nilai[$k];
}
echo "hasil * kali : ",$nilai_sementara[$k];
$index_nilai_akhir_sub[$i][$j]=$index_nilai_akhir_sub[$i][$j]+$nilai_sementara[$k];
$k++;
}
echo "<br>";
echo "HASIL AKHIR JURUSAN ",$index_jur[$i]," SUB ",$j," : ",$index_nilai_akhir_sub[$i][$j];
echo "<br>";
if($index_nilai_akhir_jur[$i]==0){
$index_nilai_akhir_jur[$i]=$index_nilai_akhir_sub[$i][$j];
} else {
$index_nilai_akhir_jur[$i]=$index_nilai_akhir_jur[$i]+$index_nilai_akhir_sub[$i][$j]; ERROR HAPPEN HERE :(
}
$j++;
}
echo "HASIL AKHIR JURUSAN ",$index_jur[$i]," tanpa sub adalah : ",$index_nilai_akhir_jur[$i];
echo "<br>";
$sql_insert1 = mysql_query("insert into t_hasil_rank_instrumen_standar values ('$index_jur[$i]','$index_nilai_akhir_jur[$i]','','')");
$i++;
}
?>`
答案 0 :(得分：0)
当您尝试使用没有值的数组变量时会发生这种情况，请尝试：
if (isset($index_nilai_akhir_jur[$i]) && isset($index_nilai_akhir_sub[$i][$j])){
$index_nilai_akhir_jur[$i]=$index_nilai_akhir_jur[$i]+$index_nilai_akhir_sub[$i][$j];}