Question

我有一个函数，它是php中一个类的一部分来获取一些数据，它似乎适用于一些但不适用于其他人

我有一个问题，它将获得前6个左右的记录，然后将其余部分返回为null这里是Var_dump $ this-＆gt; sdata

string(6) "86.544" 
Notice: Undefined property: machine::$sdata in C:\Documents and Settings\jKirkpatrick\My Documents\xammp\htdocs\Datatest.php on line 96
NULL 
string(16) "181.090909090909" 
string(5) "0.072" 
string(3) "0.0" 
string(7)   "119.952"
string(3) "0.0" 
Notice: Undefined property: machine::$sdata in C:\Documents and  Settings\jKirkpatrick\My Documents\xammp\htdocs\Datatest.php on line 96
NULL 
Notice: Undefined property: machine::$sdata in C:\Documents and Settings\jKirkpatrick\My Documents\xammp\htdocs\Datatest.php on line 96
NULL 
Notice: Undefined property: machine::$sdata in C:\Documents and Settings\jKirkpatrick\My Documents\xammp\htdocs\Datatest.php on line 96
NULL 
Notice: Undefined property: machine::$sdata in C:\Documents and Settings\jKirkpatrick\My Documents\xammp\htdocs\Datatest.php on line 96
NULL 
Notice: Undefined property: machine::$sdata in C:\Documents and Settings\jKirkpatrick\My Documents\xammp\htdocs\Datatest.php on line 96
NULL 
Notice: Undefined property: machine::$sdata in C:\Documents and   Settings\jKirkpatrick\My Documents\xammp\htdocs\Datatest.php on line 96
NULL


public function SageData() {
    $conn = odbc_connect('DATA HUB', '', '');
    if (!$conn) {
        exit("Connection Failed: " . $conn);
    }
    $sql = "SELECT `SHOP FLOOR PRODUCTION PLAN`.MACHINE, `SHOP FLOOR PRODUCTION     

PLAN`.CODE, `SHOP FLOOR PRODUCTION PLAN`.DESCRIPTION, `SHOP FLOOR PRODUCTION     
PLAN`.WONo, `SHOP FLOOR PRODUCTION PLAN`.Quantity, `SHOP FLOOR PRODUCTION 
PLAN`.cycletime, `SHOP FLOOR PRODUCTION PLAN`.IMPS, `SHOP FLOOR PRODUCTION 
PLAN`.Estimate
FROM `P:\ProductionControl\Production Planning\DATA HUB.mdb`.`SHOP FLOOR PRODUCTION   
PLAN` `SHOP FLOOR PRODUCTION PLAN`

WHERE [SHOP FLOOR PRODUCTION PLAN].[MACHINE]='$this->name' ";
$rs = odbc_exec($conn, $sql);
    if (!$rs) {
        exit("Error in SQL");
    }
    while (odbc_fetch_row($rs)) {
        $this->sdata = $this->SDtReading = odbc_result($rs, "cycletime");
    }
    return@ $this->sdata;
}

这里的数据是预期的结果

86.544
181.0909091
0.072
0
119.952
0 
72
32.76
799.992 
36
39.6
29.988

该功能是一个类的一部分，并作为Machinecycle运行（＆＃34; ZW01001＆＃34;，＆＃34; ZW01001Percent＆＃34;，0）;
在查询$ this-＆gt;名称中将是＆＃34; ZW01001＆＃34;

有关调试的帮助将非常感激

    while (odbc_fetch_row($rs)) {
        $this->sdata = $this->SDtReading = odbc_result($rs, "cycletime");
           var_dump($this->sdata);
        }
    return $this->sdata;
}

这与while循环中的Var转储产生的结果与之前发布的结果相同，没有NULL＆＃39>

    while (odbc_fetch_row($rs)) {
        $this->sdata = $this->SDtReading = odbc_result($rs, "cycletime");
        }
    var_dump($this->sdata);
    return $this->sdata;
}

对于Dump out侧，While产生的结果与之前发布的完全相同。

功能只有一半工作不确定为什么

0 个答案: