</table> <hr> <h2>Repeating Date Generator</h2> <form action="repeattest.php"> Repeating Date: <input type=text name=repeat value="<?php print $_REQUEST["repeat"]; ?> "> <input type=submit> <a href="explain/repeathelp.php" target="_BLANK" onclick="window.open('explain/repeathelp.php', 'explain', 'width=600, height=500, menubar=no, status=no, location=no, toolbar=no, scrollbars=yes'); return false;">About dates...</a> </form> <?php # Test the date repeat functions if ($_REQUEST["repeat"]) { print "<p><h2>Results for '{$_REQUEST['repeat']}'</h2>"; $tokens = datetokens($_REQUEST["repeat"]); print "<table>"; print "<tr><td>Tokens:</td><td>["; for ($i = 1; $tokens[$i]; $i++) { print ($i == 1 ? "" : ", ") . tokenstr($tokens[$i]); } print "]</td></tr>"; $tokens = datealso($tokens); print "<tr><td>Tweaked tokens:</td><td>["; for ($i = 1; $tokens[$i]; $i++) { print ($i == 1 ? "" : ", ") . tokenstr($tokens[$i]); } print "]</td></tr>"; $rules = daterules($tokens); print "<tr><td valign=top>Rules:</td><td>"; dumprules($rules);
function repeatdates($str) { # Create an empty array $daylist = array(); $d = 1; # Parse the dates $tokens = datetokens($str); $tokens = datealso($tokens); $rules = daterules($tokens); # Scan actual dates, starting with today and going forward 364 days # or until a 180 gap is detected, looking for days that meet the # parsed requirements. $date = time(); $tm = getdate($date); $date += (12 - $tm["hours"]) * 3600; # Roughly noon today for ($gap = -999, $i = 0; $gap < 180 && $i < 365; $i++) { if (dateinstance($rules, $date)) { # Found one! Append it to the list. $daylist[$d++] = array(timestamp => $date, sqldate => date("Y-m-d", $date), status => "Added", newdate => "Y", suffix => date("Mj", $date)); $gap = 0; } else { $gap++; } $date += 86400; } # derive a canonical string if ($d == 1) { # for invalid strings, use it unchanged $canonical = $str; $datestype = "error"; } else { if ($d == 2) { # for single date, use a pretty form of that date $canonical = date("l, F j", $daylist[1]["timestamp"]); $datestype = "one"; } else { if ($d > 2) { # for multiple days, check to see if consecutive. for ($i = 1; $i < $d - 1 && $daylist[$i]["timestamp"] > $daylist[$i + 1]["timestamp"] - 99999; $i++) { } if ($i == $d - 1) { # Consecutive -- express it as a range of dates $canonical = date("F j", $daylist[1]["timestamp"]) . " - "; if (substr($daylist[2]["sqldate"], 1, 7) == substr($daylist[$d - 1]["sqldate"], 1, 7)) { $canonical .= date("j", $daylist[$d - 1]["timestamp"]); } else { $canonical .= date("F j", $daylist[$d - 1]["timestamp"]); } $datestype = "consecutive"; } else { # Not consecutive -- decode the rule $canonical = repeatcanonical($rules); $datestype = "scattered"; } } } } # Stuff the canonical string and datestype into the returned array too $daylist["canonical"] = $canonical; $daylist["datestype"] = $datestype; return $daylist; }