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Timestamp

Source: Timestamp Conversion Utility

<?
function pad_leading_zero($int)
{
    if($int < 10) {
        $return['clean']    = $int;
        $return['dirty']    = "0$int";
    }
    else {
        $return['clean']    = $int;
        $return['dirty']    = $int;
    }
    return $return;
}
?>
<HTML>
<HEAD>
<STYLE type="text/css">
<!--
BODY {
    font-family: helvetica,arial,sans-sarif;
}
TH {
    background-color:   #CCF;
    font-weight:        bold;
    font-size:          large;
}
TD {
    padding:            3px;
}
TABLE.tstamp {
    background-color:   #99F;
    padding:            20px;
    border:             5px #33C double;
}
HR {
    width:              95%;
    height:             5px;
}
.values {
    color:              #F00;
    letter-spacing:     2px;
}
-->
</STYLE>
</HEAD>
<BODY>
<FORM method=post name=tstamp action="">
<TABLE align=center border=0 class=tstamp>
<TH>UNIX Timestamp Conversion Utility</TH>
<TR>
    <TD colspan=2>
    <?
    if(!$submit) { $submit = "Convert Timestamp"; $timestamp = time(); }
    switch ($submit) {
        case "Convert Timestamp":
            $date   = date("l F j, Y g:i:s a", $timestamp);
            $month  = date("n",$timestamp);
            $day    = date("j",$timestamp);
            $year   = date("Y",$timestamp);
            $hour   = date("G",$timestamp);
            $minute = date("i",$timestamp);
            $second = date("s",$timestamp);
            $day_of_week    = date("w",$timestamp);
            $day_of_year    = date("z",$timestamp);
            if(date("L",$timestamp)) { $is_leap = "Yes"; } else { $is_leap = "No"; }
            print "<B>Date:</B> <SPAN class=values>$date</SPAN>";
            print "<BR>\n\t<B>Timestamp:</B> <SPAN class=values>$timestamp</SPAN>";
            print "<BR>\n\t<B>Leap Year?:</B> <SPAN class=values>$is_leap</SPAN>";
            print "<BR>\n\t<B>Day of Week:</B> <SPAN class=values>$day_of_week</SPAN>"; 
            print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;";
            print "<B>Day of Year:</B> <SPAN class=values>$day_of_year</SPAN>";
        break;
        case "Convert Date":
            $timestamp = mktime($hour,$minute,$second,$month,$day,$year);
            $date = date("l F j, Y g:i:s a", $timestamp);
            $day_of_week    = date("w",$timestamp);
            $day_of_year    = date("z",$timestamp);
            if(date("L",$timestamp)) { $is_leap = "Yes"; } else { $is_leap = "No"; }
            print "<B>Date:</B> <SPAN class=values>$date</SPAN>";
            print "<BR><B>Timestamp:</B> <SPAN class=values>$timestamp</SPAN>";
            print "<BR><B>Leap Year?:</B> <SPAN class=values>$is_leap</SPAN>";
            print "<BR><B>Day of Week:</B> <SPAN class=values>$day_of_week</SPAN> ";
            print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;";
            print "<B>Day of Year:</B> <SPAN class=values>$day_of_year</SPAN>";
        break;
    }
    ?>
        
    <HR>
    </TD>
</TR>
<TR>
    <TD colspan=2>Enter Unix Timestamp to Convert:</TD>
</TR>
<TR>
    <TD>
        <INPUT type="text" name="timestamp" value="<? print $timestamp;?>" size="15" maxlength="15">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
        <INPUT type="submit" name="submit" value="Convert Timestamp"><HR>
    </TD>
</TR>
<TR>
    <TD>Select Date (mm:dd:yyyy hh:mm:ss) to Convert</TD>
</TR>
<TR>
    <TD>
        <SELECT name=month>
        <?
        for($i=1; $i<13; $i++) {
            $cleaned_up = pad_leading_zero($i);
            if($i == $month) {$selected = " SELECTED";}else{$selected = "";}
            print "\t\t<OPTION value=".$cleaned_up[clean]."$selected>".$cleaned_up[dirty]."\n";
        }
        ?>
        </SELECT>
        /
        <SELECT name=day>
        <?
        for($i=1; $i<32; $i++) {
            $cleaned_up = pad_leading_zero($i);
            if($i == $day) {$selected = " SELECTED";}else{$selected = "";}
            print "\t\t<OPTION value=".$cleaned_up[clean]."$selected>".$cleaned_up[dirty]."\n";
        }
        ?>
        </SELECT>
        /
        <SELECT name=year>
        <?
        for($i=1900; $i<2039; $i++) {
            if($i == $year) {$selected = " SELECTED";}else{$selected = "";}
            print "\t\t<OPTION value=".$i."$selected>".$i."\n";
        }
        ?>
        </SELECT> 
        &nbsp;&nbsp;&nbsp;
        <SELECT name=hour>
        <?
        for($i=0; $i<24; $i++) {
            $cleaned_up = pad_leading_zero($i);
            if($i == $hour) {$selected = " SELECTED";}else{$selected = "";}
            print "\t\t<OPTION value=".$cleaned_up[clean]."$selected>".$cleaned_up[dirty]."\n";
        }
        ?>
        </SELECT>
        :
        <SELECT name=minute>
        <?
        for($i=0; $i<60; $i++) {
            $cleaned_up = pad_leading_zero($i);
            if($i == $minute) {$selected = " SELECTED";}else{$selected = "";}
            print "\t\t<OPTION value=".$cleaned_up[clean]."$selected>".$cleaned_up[dirty]."\n";
        }
        ?>
        </SELECT>
        :
        <SELECT name=second>
        <?
        for($i=0; $i<60; $i++) {
            $cleaned_up = pad_leading_zero($i);
            if($i == $second) {$selected = " SELECTED";}else{$selected = "";}
            print "\t\t<OPTION value=".$cleaned_up[clean]."$selected>".$cleaned_up[dirty]."\n";
        }
        ?>
        </SELECT>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
        <INPUT type="submit" name="submit" value="Convert Date">
    </TD>
</TR>
</TABLE>
</FORM>
</BODY>