Buttons & inputs in a form |
Buttons & inputs in a form |
garyfritz |
May 14 2012, 11:23 PM
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#1
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Group: Members Posts: 2 Joined: 14-May 12 Member No.: 17,111 |
I am an HTML/PHP idiot. I've dug around the docs but I don't see how to do this.
I have a simple file that prompts for a date, then sends it to a PHP script: CODE <form action="display.php" method="post"> <p>Enter date in the format YYMMDD: <input type="text" name="date" /></p> <p> (E.g. 120205 for Feb. 5, 2012)</p> <p><input type="submit" /></p> </form> display.php grabs the value and uses it: CODE <?php $YYMMDD = htmlspecialchars($_POST['date']); $split = str_split($YYMMDD, 2); $YYsMMsDD = $split[0] . "/" . $split[1] . "/" . $split[2]; $YYYY = "20" . $split[0]; ?> I doped that much out on my own, and it works fine. Now I would like to add a couple of buttons to the first file, so in addition to typing YYMMDD, I can alternately submit "today's date" or "yesterday's date" with a simple button push. I have no idea how to do that. Help? |
Brian Chandler |
May 15 2012, 12:31 AM
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#2
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Jocular coder Group: Members Posts: 2,460 Joined: 31-August 06 Member No.: 43 |
QUOTE I doped that much out on my own, and it works fine. OK, though I don't see what the htmlspecialchars() is for. The POST input should be a 6-digit number -- you should get in the habit *always* of checking input for validity (even if in this case there is no obvious malware danger), so just check with is_numeric(). One defect of html is that it doesn't really cater for inhomogenous inputs, such as "either select from an option list or select a radio button". Anyway, the simplest way is just to have buttons "Today", etc. If there really is no other input, these could be Submit buttons, with a name and value, which you just check in the script. Another thing to remember is that concepts like "Today" are very wobbly on the web, since it's the *world wide* one. Probably my today at this instant is different from yours. So you had better explicitly write the date out in numbers on (or near) the button. HTH |
garyfritz |
May 15 2012, 04:17 PM
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#3
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Group: Members Posts: 2 Joined: 14-May 12 Member No.: 17,111 |
Good points about validity checking and date issues. I'll fix it, but this is a small script for use by a few friends and family members so it's not a big concern.
Sounds like there is no way to have the HTML form accept EITHER an entered date OR a button click? Ah! I figured out a solution. I added hyperlinks with ?parameters: CODE <h3>Click on <a href="display.php?today">TODAY</a> or <a href="display.php?yesterday">YESTERDAY</a> </h3> <form action="display.php" method="post"> <p>Or enter date in the format YYMMDD: <input type="text" name="date" /></p> <p> (E.g. 120205 for Feb. 5, 2012)</p> <p><input type="submit" /></p> </form> Then in display.php I handled it so: CODE <?php if (isset($_GET["today"])) { $YYMMDD = date('ymd', strtotime('today')); } else { if (isset($_GET["yesterday"])) { $YYMMDD = date('ymd', strtotime('yesterday')); } else { if (is_numeric($_POST['date'])) $YYMMDD = $_POST['date']; else $YYMMDD = date('ymd', strtotime('today')); } } $split = str_split($YYMMDD, 2); $YYsMMsDD = $split[0] . "/" . $split[1] . "/" . $split[2]; $YYYY = "20" . $split[0]; ?> Maybe it's not elegant, but it works like a charm! |
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