仅选择月份和日期

Question

I have this column of a mysql table (DateOfBirth) in this format 02-03-2016 I would like to display a message when member's date of birth is today. How can I select only the month and the date 02-03 in the column to compare it with $dat=date("md"); . Behold my codes

 date_default_timezone_set("America/New_York");
 $dat=date("m-d");
 $resa=mysqli_query($dbc,"SELECT name FROM qbreplace.Staff_Member WHERE 
 DateOfBirth = '$dat'") or die ('Erreur : '.mysqli_error());
 while($row = mysqli_fetch_array($resa)){
  echo "<div style='color:red;font-weight:bold;text-decoration:blink;'>Today is ".$row['name']." birthday !</div>";
 }

Answer 1

This should work although, there are so many elegant solutions. Also, as suggested by others verify whether the db stores date in dmY or mdY format

date_default_timezone_set("America/New_York");
    $dat=date("m-d");
    $resa=mysqli_query($dbc,"SELECT name FROM qbreplace.Staff_Member WHERE
     LEFT(DateOfBirth , 5) = '$dat'") or die ('Erreur : '.mysqli_error());

 while($row = mysqli_fetch_array($resa)){
            echo "<div style='color:red;font-weight:bold;text-decoration:blink;'>Today is ".$row['name']." birthday !</div>";

        }

The script checks for whether the first 5 characters in the DateOfBirth field is equal to the string you create in $dat.

A more elegant way would be do use the inbuilt date formatting, ie

 DATE_FORMAT(DateOfBirth,'%m-%d') = $dat

Answer 2

date_default_timezone_set("America/New_York");
 $dat=date("m-d");
 $resa=mysqli_query($dbc,"SELECT name FROM qbreplace.Staff_Member WHERE 
 DATE_FORMAT(DateOfBirth,'%m-%d') = '$dat'") or die ('Erreur : '.mysqli_error());
 while($row = mysqli_fetch_array($resa)){
echo "<div style='color:red;font-weight:bold;text-decoration:blink;'>Today is ".$row['name']." birthday !</div>";

 }

you can use DATE_FORMAT to convert your date format temporarily and check the present date and month. here goes your tutorial on DATE_FORMAT http://www.w3schools.com/sql/func_date_format.asp

Answer 3

There are some function are available in mysql to format your date so you can use those

You can use STR_TO_DATE() to convert your strings to MySQL date values or DATE_FORMAT function to convert your date into any format which you required

 STR_TO_DATE(datestring, '%d/%m/%Y')
DATE_FORMAT(date,'%d/%m/%Y')