</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;
}