无法使用for()将php数据插入mysql
我尝试用php将数据插入mysql,方法是检查值是否存在,如果没有,它将更新,然后它将插入,但是它失败了我使用for()我的脚本出了什么问题无法使用for()将php数据插入mysql,php,mysql,Php,Mysql,我尝试用php将数据插入mysql,方法是检查值是否存在,如果没有,它将更新,然后它将插入,但是它失败了我使用for()我的脚本出了什么问题 if(isset($_POST['submit'])){ $fieldA = $_POST['fieldA']; $fieldB = $_POST['fieldB']; $fieldC = $_POST['fieldC']; $fieldD = $_POST['fieldD']; if (empty($fieldA
if(isset($_POST['submit'])){
$fieldA = $_POST['fieldA'];
$fieldB = $_POST['fieldB'];
$fieldC = $_POST['fieldC'];
$fieldD = $_POST['fieldD'];
if (empty($fieldA)) {
echo 'fieldA cannot empty';
}
else
{
for ($i=1; $i<= $nomer; $i++) {
$query = mysql_query("SELECT * FROM tb1 ".
"WHERE fieldA = '$fieldA' ".
"AND fieldB = '$fieldB' ".
"AND fieldC = '$fieldC' ".
"AND fieldD = '$fieldD'");
$get1 = mysql_fetch_assoc($query);
$get2 = mysql_num_rows($query);
if ($get2 != 0) {
mysql_query("UPDATE tb1 SET kd_kelas = '2' ".
"WHERE fieldA = '$fieldA' ".
"AND fieldB = '$fieldB' ".
"AND fieldC = '$fieldC' ".
"AND fieldD = '$fieldD'");
} else {
mysql_query("INSERT INTO tb1(fieldA, fieldB, ".
"fieldC, fieldD) VALUES ".
"('$fieldA', '$fieldB', ".
"'$fieldC', '$fieldD')");
}
}
}
//re-direct
$go = "mydata.php";
redirect($go);
}
if(isset($\u POST['submit'])){
$fieldA=$_POST['fieldA'];
$fieldB=$_POST['fieldB'];
$fieldC=$_POST['fieldC'];
$fieldD=$_POST['fieldD'];
if(空($fieldA)){
echo“fieldA不能为空”;
}
其他的
{
对于($i=1;$i所有与mysql\u*
相关的方法现在都不推荐使用。请使用mysqli\u*
请尝试以下代码片段:
if (isset($_POST['submit']) && !empty($_POST['fieldA'])) {
$fieldA = $_POST['fieldA'];
$fieldB = $_POST['fieldB'];
$fieldC = $_POST['fieldC'];
$fieldD = $_POST['fieldD'];
for ($i = 1; $i <= $nomer; $i++) {
$sql = sprintf("SELECT * FROM tb1 WHERE fieldA = '%s' AND fieldB = '%s' AND fieldC = '%s' AND fieldD = '%s'",
$fieldA, $fieldB, $fieldC, $fieldD);
$result = mysqli_query($link, $sql);
if (mysqli_num_rows($result) > 0) {
$updateSql = sprintf("UPDATE tb1 SET kd_kelas = '2' WHERE fieldA = '%s' AND fieldB = '%s' AND fieldC = '%s' AND fieldD = '%s'",
$fieldA, $fieldB, $fieldC, $fieldD);
mysqli_query($link, $updateSql);
}
else {
$insertSql = sprintf("INSERT INTO tb1(fieldA, fieldB,fieldC, fieldD) VALUES ('%s','%s','%s','%s')", $fieldA,
$fieldB, $fieldC, $fieldD);
mysqli_query($link, $insertSql);
}
}
//re-direct
$go = "mydata.php";
redirect($go);
}
$nomer
的th值是多少?试试var\u dump($nomer)
使用$get2>0代替$get2!=0。在检查查询之前,您的select查询是否有任何结果condition@ObjectManipulator我使用$nomor++;@ChannaveerHakari从序列号id中获取结果是空的,但它应该是空的。他插入查询,但它不是。循环的目的是什么?我使用php版本5.6,mysql不是吗不再支持并且必须使用mysqli?
$link = mysqli_connect('localhost', 'root', 'password', 'database');