<?php
/**
* DateForm Class
* Allows you to easily create drop down boxes of the year, month, and day, and keep
* track of it via GET/POST. Hours, minutes, and seconds coming soon, as well as
* support for SESSION/COOKIE vars. Actually, it has the support for that right now,
* just not as beautifully handled as the GET/POST.
*
* Sample Usage
$form = new DateForm();
$form->changeFormNames( 'years', 'starting_year' );
$form->changeFormNames( 'months', 'starting_month' );
$form->changeFormNames( 'days', 'starting_day' );
$form->handlePostVars();
$form->printYears();
$form->printMonths();
$form->printDays();
* @author Jason Lotito <jason@lehighweb.com>
* @license LGPL
* @version 1.1 - Tuesday, March 05, 2002 12:05:55 PM
* @changelog
* [[
* Tuesday, March 05, 2002 12:06:12 PM
* New functionality -
* * Added support for Hours, Minutes, and Seconds
* * Added support for languages via setlocale() for display of Months.
*
* BC There should be no Backwards compatibility issues.
* ]]
* @todo
* [[
* * Add direct support for COOKIES/SESSIONS.
* * Add support for dynamic days based on months (optional with JS).
* * Any other ideas, suggestions?
* ]]
*/
class DateForm
{
var $today_info = array();
var $form_names = array( 'years' => 'form_years',
'months' => 'form_months',
'days' => 'form_days',
'hours' => 'form_hours',
'minutes' => 'form_minutes',
'seconds' => 'form_seconds' );
var $current_selections = array();
var $starting_year = '1990';
/**
* DateForm
* Constructor
*
* @author Jason Lotito
* @email jason@clockmedia.com
* @ver DATE
*/
function DateForm ()
{
$this->today_info = getdate();
}
/**
* changeFormNames
* Used to change the select boxes name attribute. You need to set this
* _BEFORE_ using them. Simply call this method, include the type of
* element you are changing (years, months, days) and then include the
* new name of the element.
*
* @access public
* @param string type The name of the type: years, months, days
* @param string value The new name of the given type.
* @return bool True on success, False on failure.
*/
function changeFormNames ( $type, $value )
{
$this->form_names[ $type ] = $value;
}
/**
* getToday
* Returns whatever information you want about today. Essentially, you give
* it a string and it returns you the element. The choices you have are the
* same as for the getdate() function. http://www.php.net/getdate
*
* @access public
* @param string today The element to return.
* @return string
*/
function getToday ( $today )
{
return $this->today_info[ $today ];
}
/**
* setStartingYear
* Sets the starting year.
* The starting year is 1990 by default. You can easily change this here, as
* long as the year is above 1600. IIRC, this has something to do with getdate().
*
* @access public
* @param string year The year you want to start with.
* @return bool
*/
function setStartingYear( $year )
{
if ( $year < $this->today_info["year"] && $year >= 1600 )
{
$this->starting_year = $year;
return true;
}
return false;
}
/**
* handlePostVars
* Maintains state over multiple pages. This allows you to easily set the
* currently selected item to be the same thing the person chose the page
* before. Works the same way as handleGetVars(), except this handles
* values passed by POST.
*
* Simply Call this value BEFORE display the form elements on the page, and
* it will set the selected values as the ones displayed. If you are
* displaying multiple elements of each type with different names, this
* needs to be called after you reassign the names to match the changes,
* but before you display the element.
*/
function handlePostVars ()
{
global $HTTP_POST_VARS;
foreach ( $this->form_names as $name => $form_name )
{
if ( ( isset($HTTP_POST_VARS[ $form_name ]) && !empty($HTTP_POST_VARS[ $form_name ]) ) )
{
$this->current_selections[$name] = $HTTP_POST_VARS[ $form_name ];
}
}
}
/**
* handleGetVars
* Maintains state over multiple pages. This allows you to easily set the
* currently selected item to be the same thing the person chose the page
* before. Works the same way as handlePostVars(), except this handles
* values passed by GET.
*/
function handleGetVars ()
{
global $HTTP_GET_VARS;
foreach ( $this->form_names as $name => $form_name )
{
if ( ( isset($HTTP_GET_VARS[ $form_name ]) && !empty($HTTP_GET_VARS[ $form_name ]) ) )
{
$this->current_selections[$name] = $HTTP_GET_VARS[ $form_name ];
}
}
}
/**
* _getMonths
* Returns the months in a hash.
*
* @access private
* @return array
* @changelog
* [[
* Tuesday, March 05, 2002 12:04:10 PM --------------------------------
* Changed to use strftime() instead of date() for the display values
* so other languages are supported.
* ]]
*/
function &_getMonths()
{
for ( $x = 1; $x < 13; $x++ )
{
$val[] = date( "m", mktime ( 0,0,0,$x,1,0 ) );
$values[] = strftime ( "%B", mktime ( 0,0,0,$x,1,0 ) );
}
$return_array = array( $values, $val );
return $return_array;
}
/**
* getDisplayYears
* Returns the HTML to display a select box of years.
*
* @access public
* @param int The number of the year that you can select. This is optional.
* @return string Contains the HTML for the select box.
*/
function getDisplayYears ( $selected_year=false )
{
if ( !$selected_year )
{
if ( !empty($this->current_selections['years']) )
{
$selected_year = $this->current_selections['years'];
} else {
$selected_year = $this->today_info["year"];
}
}
$values = $val = range( $this->starting_year, $this->today_info["year"] );
return $this->select( $this->form_names['years'], $values, $val, $selected_year );
}
/**
* printYears
* Prints the years 'select box'.
*
* @access public
* @param int The number of the year that you can select. This is optional.
* @return void
*/
function printYears ( $selected_year=false )
{
echo $this->getDisplayYears( $selected_year );
}
/**
* getDisplayMonths
* Returns the HTML to display a select box of months.
*
* @access public
* @param int The number of the month that you can select. This is optional.
* @return string Contains the HTML for the select box.
*/
function getDisplayMonths ( $selected_month=false )
{
if ( $selected_month === 0 )
$selected_month = 12;
if ( !$selected_month )
{
if ( !empty($this->current_selections['months']) )
{
$selected_month = $this->current_selections['months'];
} else {
$selected_month = $this->today_info["mon"];
}
}
list( $values, $val ) = $this->_getMonths();
return $this->select( $this->form_names['months'], $values, $val, $selected_month );
}
/**
* printMonths
* Prints the month 'select box'.
*
* @access public
* @param int The number of the month that you can select. This is optional.
* @return void
*/
function printMonths ( $selected_month=false )
{
echo $this->getDisplayMonths( $selected_month );
}
/**
* getDisplayDays
* Returns the HTML to display a select box of days. Simply defaults to 31 days.
*
* @access public
* @param int The number of the days that you can select. This is optional.
* @return string Contains the HTML for the select box.
*/
function getDisplayDays ( $selected_day=false )
{
if ( !$selected_day )
{
if ( !empty($this->current_selections['days']) )
{
$selected_day = $this->current_selections['days'];
} else {
$selected_day = $this->today_info["mday"];
}
}
$values = $val = range( 1, 31 );
return $this->select( $this->form_names['days'], $values, $val, $selected_day );
}
/**
* printDays
* Prints the Days 'select box'.
*
* @access public
* @param int The number of the days that you can select. This is optional.
* @return void
*/
function printDays ( $selected_day=false )
{
echo $this->getDisplayDays( $selected_day );
}
/**
* getDisplayHours
* Returns the HTML to display a select box of hours. Simply defaults to
* 24 hours. The range used is 0 to 23 hours.
*
* @access public
* @param int The number of the hours that you can select. This is optional.
* @return string Contains the HTML for the select box.
*/
function getDisplayHours ( $selected_hour=false )
{
if ( !$selected_hour )
{
if ( !empty($this->current_selections['hours']) )
{
$selected_hour = $this->current_selections['hours'];
} else {
$selected_hour = $this->today_info["hours"];
}
}
$values = $val = range( 0, 23 );
return $this->select( $this->form_names['hours'], $values, $val, $selected_hour );
}
/**
* printHours
* Prints the hours 'select box'.
*
* @access public
* @param int The number of the hour that you can select. This is optional.
* @return void
*/
function printHours ( $selected_hour=false )
{
echo $this->getDisplayHours( $selected_hour );
}
/**
* getDisplayMinutes
* Returns the HTML to display a select box of minutes. Simply defaults to
* 24 hours. The range used is 60 minutes.
*
* @access public
* @param int The number of the minutes that you can select. This is optional.
* @return string Contains the HTML for the select box.
*/
function getDisplayMinutes ( $selected_minute=false )
{
if ( !$selected_minute )
{
if ( !empty($this->current_selections['minutes']) )
{
$selected_minute = $this->current_selections['minutes'];
} else {
$selected_minute = $this->today_info["minutes"];
}
}
$values = $val = range( 0, 59 );
return $this->select( $this->form_names['minutes'], $values, $val, $selected_minute );
}
/**
* printMinutes
* Prints the minutes 'select box'.
*
* @access public
* @param int The number of the minute that you can select. This is optional.
* @return void
*/
function printMinutes ( $selected_minute=false )
{
echo $this->getDisplayMinutes( $selected_minute );
}
/**
* getDisplaySeconds
* Returns the HTML to display a select box of seconds. Simply defaults to
* 24 hours. The range used is 60 seconds.
*
* @access public
* @param int The number of the seconds that you can select. This is optional.
* @return string Contains the HTML for the select box.
*/
function getDisplaySeconds ( $selected_seconds=false )
{
if ( !$selected_seconds )
{
if ( !empty($this->current_selections['seconds']) )
{
$selected_seconds = $this->current_selections['seconds'];
} else {
$selected_seconds = $this->today_info["seconds"];
}
}
$values = $val = range( 0, 59 );
return $this->select( $this->form_names['seconds'], $values, $val, $selected_seconds );
}
/**
* printSeconds
* Prints the seconds 'select box'.
*
* @access public
* @param int The number of the second that you can select. This is optional.
* @return void
*/
function printSeconds ( $selected_seconds=false )
{
echo $this->getDisplaySeconds( $selected_seconds );
}
/**
select
$name is the name attribute of the SELECT tag.
$values is what is displayed to the user. This can be an array.
$val is the VALUE attribute for the OPTION part of the SELECT tag. This is also an array. Each $val[] element correspond to a $values[] element. You do not have to set this, though, if you don't, the $val will equal to the $value
For example
$val[0] is equal to $values[0]
$val[1] is equal to $values[1]
$selected_val is the value that is preselected.
$multiple supposedly allows you to pick more than one choice, but this has yet to be tested.
*/
function select($name,$values,$val=FALSE,$selected_val=FALSE)
{
$content = "\n".'<select name="'.$name.'">'."\n";
$count = 0;
$max_count = count($values);
while ( $count < $max_count )
{
$option = $values[$count];
if (!isset($val[$count]))
{
$val[$count] = $values[$count];
}
if ($selected_val == $val[$count])
{
$selected = ' selected="selected"';
} else {
$selected = '';
}
$val[$count] = str_replace(" ", "_", $val[$count]);
$content .= "\t".'<option value="'.$val[$count].'"'.$selected.'>'.$values[$count].'</option>'."\n";
$count++;
$selected = "";
}
$content .= "\n".'</select>'."\n";
return $content;
}
}
?>
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