Question

我的原始SELECT查询工作，但没有插入PHP代码中的变量。

这是我的实际选择查询：

SELECT * FROM `program_list`
WHERE
speciality LIKE '%IM%'
AND (stepone2digit <= 78 OR stepone2digit=0)
AND (stepone3digit <= 189 OR stepone3digit=0)
AND (steptwock2digit <= 78 OR steptwock2digit=0)
AND (steptwock3digit <= 189 OR steptwock3digit=0)
AND (steptwocs = 'PASS' OR steptwocs IS NULL)
AND (steponeattempt <= 1 OR steponeattempt=0)
AND (steptwockattempt <= 1 OR steptwockattempt=0)
AND (steptwocsattempt <= 2 OR steptwocsattempt=0)
AND ((USCEImportance = 'MAND' AND USCENoOfMonths<= '3') OR USCEImportance = 'PREF')
AND (yearsfrompassing >= 2 OR yearsfrompassing=0);

以下是我在PHP中传递它的方式：

    $sql = "SELECT * FROM `program_list`
    WHERE
    speciality LIKE '%%s%'
    AND (stepone2digit <= %d OR stepone2digit=0)
    AND (stepone3digit <= %d OR stepone3digit=0)
    AND (steptwock2digit <= %d OR steptwock2digit=0)
    AND (steptwock3digit <= %d OR steptwock3digit=0)
    AND (steptwocs = '%s' OR steptwocs IS NULL)
    AND (steponeattempt <= %d OR steponeattempt=0)
    AND (steptwockattempt <= %d OR steptwockattempt=0)
    AND (steptwocsattempt <= %d OR steptwocsattempt=0)
    AND ((USCEImportance = 'MAND' AND USCENoOfMonths<= '%s') OR USCEImportance = 'PREF')
    AND (yearsfrompassing >= %d OR yearsfrompassing=0)

当我运行原始查询时，它工作正常，但是当我插入变量并从PHP运行它时，不会返回任何结果。

我错过了什么？请帮忙。

Answer 1

您没有在那里分配'％d'和'％s'（尝试使用var_dump（$ sql）调试$ sql）。你应该使用sprintf。例如：

$sql = sprintf("SELECT * FROM `program_list` WHERE speciality LIKE '%%s%'",$speciality);

Answer 2

我假设您使用sprintf将％s和％d替换为实际值。

问题在于此代码片段：

speciality LIKE '%%s%'

%%将替换为单个%，而最后%将返回警告或通知，因为%'对sprintf无效。您必须使用该语法：

speciality LIKE '%%%s%%'

您的完整查询将是：

$sql = "SELECT * FROM `program_list`
WHERE
speciality LIKE '%%%s%%'
AND (stepone2digit <= %d OR stepone2digit=0)
AND (stepone3digit <= %d OR stepone3digit=0)
AND (steptwock2digit <= %d OR steptwock2digit=0)
AND (steptwock3digit <= %d OR steptwock3digit=0)
AND (steptwocs = '%s' OR steptwocs IS NULL)
AND (steponeattempt <= %d OR steponeattempt=0)
AND (steptwockattempt <= %d OR steptwockattempt=0)
AND (steptwocsattempt <= %d OR steptwocsattempt=0)
AND ((USCEImportance = 'MAND' AND USCENoOfMonths<= '%s') OR USCEImportance = 'PREF')
AND (yearsfrompassing >= %d OR yearsfrompassing=0)";

不要忘记使用sprintf在查询中插入值。

原始的SELECT查询工作，但没有插入PHP代码的变量

2 个答案: