Php 函数检查MySQL表中的字段是否等于1

对于下面的MySQL表，哪个PHP函数会简单地测试'subcheck'是否等于1

提前感谢,

约翰

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您没有提供太多需要的信息，例如表名、检查条件，所以我只提供一个简单的查询供您使用

$query = mysql_query('SELECT subcheck FROM your_table WHERE subcheck = "1"');

if ($query)
{
//your subcheck is 1
}
else
{
//your subcheck is not 1 / nothing was found
}

如果您只需要选择具有特定submissionid的项目，最好将其更改为以下内容：

$submissionid = 809;
$query = mysql_query('SELECT subcheck
                      FROM your_table
                      WHERE submissionid = "' . $submissionid . '"');

if ($row = mysql_fetch_row($query))
{
    if ($row[0] == 1) { } //your subcheck is one
    else { } //your subcheck is not one
}
else { } //no matching records found

如果$submissionid将基于不安全的源（如用户输入），请记住转义$submissionid

$submissionid = 809;
$query = mysql_query('SELECT subcheck
                      FROM your_table
                      WHERE submissionid = "' . $submissionid . '"');

if ($row = mysql_fetch_row($query))
{
    if ($row[0] == 1) { } //your subcheck is one
    else { } //your subcheck is not one
}
else { } //no matching records found