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A weird mysql_fetch_(assoc,array,object)差错[复制]
原标题:A weird mysql_fetch_(assoc,array,object) error [duplicate]
  • 时间:2010-12-13 10:50:37
  •  标签:
  • php
  • mysql
  • sql
This question already has answers here:
Closed 10 years ago.

Possible Duplicate:
php warning mysql_fetch_assoc

我对我的文字有一个令人难过的问题。 它总是在我的sql_fetch_array或我的sql_fetch_assoc上出现错误。 我在我的项目中多次使用了我的智慧。 我多次检查了这一错误,但我对正在发生的事情视而不见。 我的描述是否有错?

My functions aim is learning the biggest value of specified mysql field.

职能如下:

function nextIncrement($table,$field) {
    $sql = mysql_query("SELECT  $field  FROM  $table  ORDER BY  $field  DESC LIMIT 0,1");
    while($row = mysql_fetch_assoc($sql)) {
        $next = $row[$field];
    }
    $next = (int)$next;
    return $next;
}

Warning: mysql_fetch_assoc():所提供的论据不是MySQL的一种有效结果资源......

最佳回答

很可能,您的<代码>mysql_query(因某种原因被退回。

rel=“nofollow” 手册关于可能数值的清单,mysql_query()。

Do a echo mysql_error(); to see what s wrong.

问题回答

检查一下,在得出结果之前,询问实际上会成功。

您的发言中可能出现错误,或者您可能没有公开的数据库链接?





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