Question

我想根据用户收到的数据动态创建sql个查询。

代码：

$test = $_POST['clientData']; //It can be an array of values
count($test); //This can be 2 or 3 or any number depending upon the user input at the client

$query = "select * from testTable where testData = ".$test[0]." and testData = ".$test[1]." and . . .[This would vary depending upon the user input]"

是否有可能实现上述方案。我在这方面比较新。你的指导会有所帮助。

Answer 1

使用准备好的陈述：

$query = $dbh->prepare("SELECT * FROM testtable WHERE testData=:test0 and testData=:test1");
$query ->bindParam(':test0', $test0);
$query ->bindParam(':test1', $test0);

$test0 = $test[0];
$test1 = $test[1];

$query->execute();

Answer 2

使用：

<?php

$test=$_POST['clientData'];//It can be an array of values

$query = "select *from testtable where 1 ";
foreach($test as $value) {
    $query .= " AND testData='" . $value . "'";
}

echo $query;

?>

Answer 3

Rishi这是一个很长的篇章。

如果您想搜索单个字段，那么您可以尝试：

<?php
$test = $_POST[ 'clientData' ];
if( is_array( $test ) ){
    $select = implode( ",", $test );
} else { 
    $select = $test;

}

$query=select *from testtable where testData IN ( $select );
?>

这仅适用于搜索特定字段。如果你想在多个领域创建搜索，那么你需要做更多的工作，拥有一个可以创建关系变量名称的关联映射 - ＆gt; field_to_search

Answer 4

这是非常伪代码，因为我不太了解PHP，但是你不能做这样的事情

$query = "select * from testable";

$count = count($test);

if($count  > 0)
{ 
    $query .= " where ";

    for ($x=0; $x<=$count; $x++)
    {
        if($x > 0)
        {
              $query .= " and ";
        }

        $query .= " testData='" . $test[x] . "'";
    } 
}

Answer 5

$test=$_POST['clientData'];
$query="select * from testtable where testData='".$test[0]."' and testData='".$test[1]."' and . . .[This would vary depending upon the user input]";
$result = mysql_query($query);

Answer 6

$data = $_POST['data'];

$query = "SELECT";

if ( is_set($data['columns']) )
   $query .= " ".implode(',',$data['columns']);
else
   $query .= "*";

if ( is_set($data['table']) )
$query .= " ".$data['table'];

和......

Answer 7

$test=$_POST['clientData'];//It can be an array of values
    $dValuesCount = count($test);//This can be 2 or 3 or any number depending upon the user input at the client

    $query="select *from testtable ";  


    if ($dValuesCount > 0 ){
        $query .= " WHERE ";

        for ($dCounter = 0; $dCounter <= $dValuesCount ; $dCounter++){

            $query .= "testData=" . $test[$dCounter];
            if ($dCounter != ($dValuesCount - 1)){

            $query .= " AND ";
            }

        }


    }

Answer 8

$q="select *from table where ";
    $a=count($test)-1;
    $b=0;
    while($element = current($test)) {
        $key=key($array);
        if($b!=$a){
            $q.=$key."=".$test[$key]." and ";
        }
        else {
            $q.=$key."=".$test[$key];
        }
        next($array);
        $b=$b+1;
    }

为此，您的数组必须包含columnname作为密钥例如

$test['name'],$test['lastname']

然后它将return

$q="select * from table where name=testnamevalue and lastname=testlastnamevalue";

希望它有效

动态创建SQL查询

8 个答案: