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Thread: check table's field that its type is Date problem

  1. #1
    Join Date
    Jun 2011
    Posts
    29

    check table's field that its type is Date problem

    hello,

    i have a question.. i have a form in which a user adds his name, blood type and his age of birth.
    at my sql table the column age_of_birth is type Date.

    when i add a valid date, the date enters the table normally eg. 1990-02-21
    when i add an invlaid date eg. 2000-50-50, the date enters the table like this 0000-00-00

    i want to perform a check at the time the users presses the submit button.
    a way, that i thought, to check was to do this:

    Code:
    $age_of_birth=mysql_real_escape_string(trim($_POST['age_of_birth']));
    
    if ( $age_of_birth == "0000-00-00" )
    	{
    		echo "Invalid date";
            }
    but then i thought that the date have not entered the table yet and its value is still 2000-50-50
    so the date will always enter the talbe..

    more specifically this is my code and it has to do about donating organs. so i made a database to add the organs and keep a track of what's available.

    Code:
    <?php
    db_open();
    
    if (isset($_POST['type_mosx']) && isset($_POST['oa_mosx']) && isset($_POST['age_mosx']) 
    && isset($_SESSION['username']))
    {
    
    	$type_mosx=mysql_real_escape_string(trim($_POST['type_mosx']));
    	$oa_mosx=mysql_real_escape_string(trim($_POST['oa_mosx']));
    	$age_mosx=mysql_real_escape_string(trim($_POST['age_mosx']));
    	$user=$_SESSION['username'];
    	
    	if ( $age_mosx == "0000-00-00" )
    	{
    		echo "<font style='color:red;font-size:18px;'> Δώσατε λάθος ηλικία. Κάντε την καταχώρηση ξανά εισάγωντας σωστά την ηλικία.</font>
    		<br /><br />";
    	}
    
    	else
    	{
    		$sql="INSERT into mosx VALUES (NULL, '$type_mosx', '$oa_mosx', '$age_mosx', '$user')";
    		@ $result = mysql_query($sql);
    		if ($result) { echo "<font style='color:green;font-size:20px;'>Η καταχώρηση έγινε επιτυχώς</font>";}
    		else { echo "Σφάλμα, Δοκιμάστε ξανα.";}
    	}
    }
    
    echo <<<FORM_SIGNUP
    
    <h2 align="center">Καταχώρηση Οργάνου</h2>
    <br/>
    <br/>
    	<p style='font-size:18px;'>Συμπληρώστε τα κενά με λατινικούς χαρακτήρες.</p>	
    <form method="post" action="">
    <table align=center>
    <tr><td>Τύπος Μοσχεύματος:</td><td><input required="required" type="text" name="type_mosx" maxlength="30" /></td> </tr>
    <tr><td>Ομάδα Αίματος:</td><td><input required="required" type="text" name="oa_mosx" maxlength="4" /></td> </tr>
    <tr><td>Ηληκία Μοσχεύματος:</td><td><input required="required" type="text" name="age_mosx" maxlength="10"/></td>  </tr>
    
    <tr><td colspan="2" align="right"><input type="submit" name="register" value="Καταχώρηση" /></td></tr>
    		</table>
    		</form>
    		<br />
    		<a href='index.php'>Επιστροφή στην αρχική σελίδα</a><br />
    		<a href='logout.php'>Αποσύνδεση</a>
    FORM_SIGNUP;
    
    
    }
    
    db_close();

    any help will be highly appreciated.

    thank you all in advance.

    Best regards.

  2. #2
    Join Date
    Aug 2004
    Location
    Ankh-Morpork
    Posts
    22,282
    You could do something like this to allow for many different date formats:
    PHP Code:
    $parsedDate strtotime($_POST['date']);
    if(
    $parsedDate == 0) { // returns zero if it cannot interpret it
        // handle invalid date input as desired
    }
    else {
        
    $dbCompatibleDate date('Y-m-d'$parsedDate);
    }
    // then you can use $dbCompatibleDate in your SQL. 
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