PHP使用日期范围显示数据

Question

Here it's, I've got the answer.

I just change in track_reports.php to be :

if (isset($_POST['chkOtdate']))
                    {
                        $date_from = $_POST['date_from'];
                        $date_to = $_POST['date_to'];
                        if (empty($bagianWhere))
                        {
                            $bagianWhere .= "ot_date between '$date_from' and '$date_to'";
                        }
                        else
                        {
                            $bagianWhere .= " AND ot_date between '$date_from' and '$date_to'";
                        }
                    }

and now nothing problem the code can be run smoothly. Thanks for your helps friends. Appreciate with your suggestions and comments.

---

I have a trouble with my code below :

1. view_report.php

We can view report based on badge_id, employee_name and ot_date (with a range). When I try to find using badge_id and employee_name no problem, data showed. But when I try to find using date range, error found. the error is : : mysql_fetch_array() expects parameter 1 to be resource, boolean given in on line WarningC:\\xampp\\htdocs\\siix_dev\\overtime\\track_reports.php327

<form method="post" action="track_reports.php" name="form">
                    <table id="mytable">
                        <tr>
                            <td>
                                <input type="checkbox" name="chkBadge" onClick="apply(this.checked, 'textBox')"> <font class="category">Badge ID</font>
                            </td>

                            <td>
                                <input id="textBox" class="text sign" type="text" name="badge_id">
                            </td>
                        </tr>

                        <tr>
                            <td>
                                <input type="checkbox" name="chkEmp" onClick="apply(this.checked, 'textBox2')"> <font class="category">Employee Name</font>
                            </td>

                            <td>
                                <input id="textBox2" class="text sign" type="text" name="employee_name">
                            </td>
                        </tr>

                        <tr>
                            <td>
                                <input id="myCheckBox" type="checkbox" name="chkOtdate" onClick="apply(this.checked, 'textBox3')" onChange="apply(this.checked, 'textBox4')"> <font class="category">OT Date</font>
                            </td>

                            <td>
                                <font class="category">From</font> <input id="textBox3" class="text sign" type="text" name="date_from" ><font class="category"> To</font> <input id="textBox4" class="text sign" type="text" name="date_to" >
                            </td>
                        </tr>

                        <tr>
                            <td></td>
                            <td>
                                <input type="submit" name="submit" value="Submit">
                            </td>
                        </tr>
                    </table>
                </form>

1. track_reports.php

     $bagianWhere = ""; if (isset($_POST['chkBadge'])) { $badge_id = $_POST['badge_id']; if (empty($bagianWhere)) { $bagianWhere .= "badge_id = '$badge_id'"; } } if (isset($_POST['chkEmp'])) { $employee_name = $_POST['employee_name']; if (empty($bagianWhere)) { $bagianWhere .= "employee_name LIKE '$employee_name'"; } else { $bagianWhere .= " AND employee_name LIKE '$employee_name'"; } } if (isset($_POST['chkOtdate'])) { $date_from = $_POST['date_from']; $date_to = $_POST['date_to']; $query=mysql_query("select badge_id, employee_name from t_submissions where ot_date between '$date_from' and '$date_to'"); while($row=mysql_fetch_array($query)){ echo $row['badge_id']; echo $row['employee_name']; } } $query = "SELECT * FROM t_submissions WHERE ".$bagianWhere; $hasil = mysql_query($query); echo " <div id='main' class='wrapper'> <div class='content-area'> <table cellspacing='0' class='font'>"; echo "<tr><th class='th'>Badge ID</th><th class='th'>Employee Name</th><th class='th'>OT Date</th><th class='th'>Department</th><th class='th'>OT From</th><th class='th'>OT To</th><th class='th'>Remarks</th><th class='th'>Submissions By</th><th class='th'>Acknowledged By</th><th class='th'>Approved By</th></tr>"; while ($data = mysql_fetch_array($hasil)) { echo "<tr><td class='td'>".$data['badge_id']."</td><td class='td'>".$data['employee_name']."</td><td class='td'>".$data['ot_date']."</td><td class='td'>".$data['dept_name']."</td><td class='td'>".$data['ot_from']."</td><td class='td'>".$data['ot_to']."</td><td class='td'>".$data['remarks']."</td><td class='td'>".$data['submission_by']."</td></tr>"; } echo "</table> <br> <input type='button' VALUE='Back' onClick='history.go(-1);return true;'> </div> </div> "; ?> 

Someone can help me ? Appreciate with your helps.

Answer 1

Make sure the datatype of ot_date is datetime or not ? perhaps you used varchar

Answer 2

In your comments above, you state that the ot_date column in which you are storing your "dates" has type VARCHAR . Therefore MySQL doesn't recognise its contents as dates at all, but rather treats them like a sequence of meaningless (to it) characters (such as a word).

The best thing you could do is to alter your database so that such dates are stored in a format that MySQL recognises as a date, like the DATE data type. To do this without losing your existing data:

1. Rename the existing column and add a new one in its place:

    ALTER TABLE t_submissions CHANGE ot_date ot_date_old VARCHAR(size), ADD ot_date DATE [NOT NULL] AFTER ot_date_old; 

2. Copy the contents of the old column into the new one, as dates:

    UPDATE t_submissions SET ot_date = STR_TO_DATE(ot_date_old, '%d-%b-%Y'); 

3. Verify that the new column contains the expected data:

    SELECT ot_date, ot_date_old FROM t_submissions; 

4. Delete the old column (optional):

    ALTER TABLE t_submissions DROP ot_date_old; 

Next, to make your query work, MySQL needs to know how to convert the submitted dates into dates rather than treating them as strings:

SELECT badge_id, employee_name FROM t_submissions
WHERE ot_date BETWEEN STR_TO_DATE('%d-%b-%Y', ?) AND STR_TO_DATE('%d-%b-%Y', ?)

Note that I have used ? in place of the date variables because, as mentioned in my comments above, your code is currently subject to SQL injection and you really should be passing such variables to MySQL as parameters to a prepared statement (as such, they wouldn't get evaluated for SQL). Read about Bobby Tables for more information.

Also note that your current form requires the user to enter the dates into the text boxes in the specified format, or else the query will fail. You would be better off requiring the user to select date parts from drop-downs (or some form of calendar control) and/or perform validation in order to ensure that submitted dates are in the correct format.

Finally, you should test the result of your query to see if it succeeded before attempting to read a recordset that might not exist (as indeed it didn't in this case).