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Re: Digest Number 497

pavanshyam Posted: Fri Mar 18, 2005 6:23 pm

Joined: 18 Mar 2005

Posts: 1

Re: Digest Number 497

hello everybody,
I am new to php prog... and need a big help from anyone of u,plz...
i am working on php and mysql ( and javascript ) on linux (rh9)... in
my application i hav to calculate the no. of sundays between two given
dates.
for ex:-
( my input is )
$date1 = 1 Jan 2005
$date2 = 8 Jan 2005
( my output shud b )
$period = 7
$noSundays = 1
well for the dates there is calender, which is also in javascript and
i am able to calculate the period using javascript too. and that value
i am storing in in the php variables and displaying them. But i need
to substract the sundays too.
Can sombody plz suggest me what to do?
Or if i am not clear in this mail i ll give more info..
thanking you and waiting for ur valuable responces
-regards
shyam

attanasio@... Posted: Sat Mar 19, 2005 1:35 am

Joined: 19 Mar 2005

Posts: 12

Re: Digest Number 497

Hi I recommend you a class from PHP-Classes .org
it perfect for date calculations ...

Take a look at the "public methods" and use the one which suit to you..

here`s the class code:
<?php
/**
* classe pour la gestion de date
* date manipulation
* some stuff comes from SPLIB (DateMath.php)
*
* @author lx barjon <lx-dateobj@...>
* @version 0.1
*
*/
class dateObj {
/**
* Date de référence / current object date
* @var string
* @access private
*/
var $baseDate;
/**
* timestamp
* @var int
* @access private
*/
var $timestamp;
/**
* separateur date (`-` par défaut) / date separator
* @var string
* @access private
*/
var $dateSeparator;
/**
* separateur time (`:` par défaut) / time separator
* @var string
* @access private
*/
var $timeSeparator;
/**
* separateur Datetime (` ` par défaut) / date/time separator
* @var string
* @access private
*/
var $dateTimeSeparator;
/**
* liste des jours en français (à modifier dans le constructeur pour
une autre langue)
* @var array
* @access private
*/
var $lgueDays;
/**
* liste des mois en français (à modifier dans le constructeur pour
une autre langue)
* @var array
* @access private
*/
var $lgueMonths;

/**
* -------------------------------------------------------
* METHODES PUBLIQUES / PUBLIC METHODS
* -------------------------------------------------------
*/
/**
* Constructeur / Constructor
*
* @param string $baseDate Date pour initialiser l`objet / date to
init the object
* @acces public
*/
function dateObj( $baseDate = `` ) {
$this->dateSeparator = `-`;
$this->timeSeparator = `:`;
$this->dateTimeSeparator = ` `;
if ( empty($baseDate) ) $this->baseDate = date("Y-m-d H:i:s");
else $this->baseDate = $baseDate;
$this->timestamp = $this->date_to_timestamp();

$this->lgueDays = array(
`Sunday`=>`domenica`,
`Sun`=>`dom`,
`Monday`=>`lunedì`,
`Mon`=>`lun`,
`Tuesday`=>`martedì`,
`Tue`=>`mar`,
`Wednesday`=>`mercoledì`,
`Wed`=>`mer`,
`Thursday`=>`giovedì`,
`Thu`=>`gio`,
`Friday`=>`venerdì`,
`Fri`=>`ven`,
`Saturday`=>`sabato`,
`Sat`=>`sab`
);

$this->lgueMonths = array(
`January`=>`gennaio`,
`Jan`=>`gen`,
`February`=>`febbraio`,
`Feb`=>`feb`,
`March`=>`marzo`,
`Mar`=>`mar`,
`April`=>`aprile`,
`Apr`=>`apr`,
`May`=>`maggio`,
`June`=>`juin`,
`Jun`=>`giugno`,
`July`=>`luglio`,
`Jul`=>`juil`,
`August`=>`agosto`,
`Aug`=>`aoû`,
`September`=>`settembre`,
`Sep`=>`sep`,
`October`=>`ottobre`,
`Oct`=>`oct`,
`November`=>`novembre`,
`Nov`=>`nov`,
`December`=>`dicembre`,
`Dec`=>`dic`
);

}
/**
* set_date
*
* @desc change la date de l`objet / set date for the object
* @param string Nouvelle date
* @access public
*/
function set_date( $date ) {
$this->baseDate = $date;
$this->timestamp = $this->date_to_timestamp();
}
/**
* date_to_timestamp
*
* @desc retourne un timestamp de la date fournie
ou de la date de l`objet si aucune date fournie
/ return $date timestamp or object date timestamp
* @param string $date Date à traiter
* @access public
*/
function date_to_timestamp( $date = `` ) {
if ( empty($date) ) $date = $this->baseDate;
### recup date dans un tableau assoc
$dateInfo = $this->date_to_array( $date );
return mktime( $dateInfo[`H`], $dateInfo[`i`], $dateInfo[`s`],
$dateInfo[`m`], $dateInfo[`d`], $dateInfo[`Y`]);
}
/**
* date_add
*
* @desc ajoute $howMany à $toWhat sur la date de l`objet et
retourne la date au format $format
* @param int $howMany
* @param string $toWhat Valeur possible / possible value
Y m d H i s
* @param string $format
* @access public
*/
function date_add( $howMany, $toWhat, $format = "Y-m-d H:i:s" ) {
$dateInfo = $this->date_to_array();
$dateInfo[$toWhat] += $howMany;
$tmpDate = date( "Y-m-d H:i:s", mktime( $dateInfo[`H`],
$dateInfo[`i`], $dateInfo[`s`], $dateInfo[`m`], $dateInfo[`d`],
$dateInfo[`Y`]) );
return $this->format( $format, $tmpDate );
}
/**
* date_sub
*
* @desc retire $howMany à $toWhat sur la date de l`objet et
retourne la date au format $format
* @param int $howMany
* @param string $toWhat Valeur possible / possible value
Y m d H i s
* @param string $format
* @access public
*/
function date_sub( $howMany, $toWhat, $format = "Y-m-d H:i:s" ) {
$dateInfo = $this->date_to_array();
$dateInfo[$toWhat] -= $howMany;
$tmpDate = date( "Y-m-d H:i:s", mktime( $dateInfo[`H`],
$dateInfo[`i`], $dateInfo[`s`], $dateInfo[`m`], $dateInfo[`d`],
$dateInfo[`Y`]) );
return $this->format( $format, $tmpDate );
}
/**
* get_timestamp
*
* @desc retourne le timestamp de la date de l`objet
* @access public
*/
function get_timestamp() {
return $this->timestamp;
}
/**
* date_to_array
*
* @desc retourne un tableau associatif avec les paramètres de la date fournie
* @param string $date Date à traiter, si vide -> date de ref de l`objet
* @return array
*/
function date_to_array( $dateTime = `` ) {
if ( empty($dateTime) ) $dateTime = $this->baseDate;
$arrayDate = array();
### verif présence heure
$timePos = strpos( $dateTime, $this->dateTimeSeparator );
if ( $timePos ) {
$date = substr( $dateTime, 0, $timePos );
$time = substr( $dateTime, $timePos+strlen($this->timeSeparator),
strlen($dateTime) );
} else $date = $dateTime;
### Traitement date
# -- verif si date valide
$dateIsValid = true;
# *** date au format d m Y ?
$pattern =
"([0-9]{1,2})".$this->dateSeparator."([0-9]{1,2})".$this->dateSeparator."([0-9]{
4})";
if ( ereg($pattern, $date, $regs) ) {
$arrayDate[`Y`] = intval($regs[3]);
$arrayDate[`m`] = intval($regs[2]);
$arrayDate[`d`] = intval($regs[1]);
} else {
# *** sinon date au format y m d ?
$pattern =
"([0-9]{4})".$this->dateSeparator."([0-9]{1,2})".$this->dateSeparator."([0-9]{1,
2})";
if ( ereg($pattern, $date, $regs) ) {
$arrayDate[`Y`] = intval($regs[1]);
$arrayDate[`m`] = intval($regs[2]);
$arrayDate[`d`] = intval($regs[3]);
# *** sinon date invalide
} else $dateIsValid = false;
}
if ( !$dateIsValid ) {
trigger_error( `<p>class dateObj::date_to_array($date) --> la date
fournie est invalide!<br>Date fournie : `.$dateTime.`</p>`,
E_USER_ERROR );
}

### Traitement heure
# -- heure existe ?
if ( isset($time) ) {
$hour = explode( $this->timeSeparator, $time );
$arrayDate[`H`] = intval($hour[0]);
$arrayDate[`i`] = intval($hour[1]);
$arrayDate[`s`] = intval($hour[2]);
# -- sinon 0 par défaut
} else {
$arrayDate[`H`] = 0;
$arrayDate[`i`] = 0;
$arrayDate[`s`] = 0;
}

return $arrayDate;
}
/**
* format
*
* @desc met la date $date au format $format (compatible fonction date();)
* @param string $format Format désiré pour la date (ex: "le d-m-Y à H:i:s")
* @param string $date Date à traiter, si false -> date de ref de l`objet
* @return string
*/
function format( $format, $date = `` ) {
if ( empty($date) ) $timestamp = $this->timestamp;
else {
$timestamp = $this->date_to_timestamp( $date );
}
$mydate = date($format, $timestamp);
$days = $this->_en_notations_list($this->lgueDays);
if ( preg_match("(".$days.")", $mydate, $regs) ) {
$mydate = str_replace( $regs[0], $this->lgueDays[$regs[0]], $mydate );
}
$months = $this->_en_notations_list($this->lgueMonths);
if ( preg_match("(".$months.")", $mydate, $regs) ) {
$mydate = str_replace( $regs[0], $this->lgueMonths[$regs[0]], $mydate );
}
return $mydate;
}
/**
* diff
*
* @desc effectue this->timestamp - timestamp($date)
* @param string $date Date à soustraire à la date de ref
* @param string $retMode Mode pour l`info de retour
valeur possible :
jours, days, heures, hours, minutes, mins, all
ou vide -> valeur par défaut = secondes
* @param string $roundMode Fonction à utiliser pour l`arrondi des
calculs -> none = pas d`arrondi
*/
function diff( $date, $retMode = ``, $roundMode = `ceil` ) {
if ( empty($date) ) {
trigger_error("class dateObj::diff($date) --> la date à soustraire
n`est pas définie.", E_USER_ERROR );
} else {
$diffSecondes = ( $this->timestamp - $this->date_to_timestamp($date) );
$diff = array();
switch ($retMode) {
case `all` :
{
$diffMinutes = bcdiv( $diffSecondes, 60, 2 );
$diffHours = bcdiv( $diffMinutes, 60, 2 );
$numHours = bcmod( $diffHours, 24 );
$numMinutes = bcmod( $diffMinutes, 60);
$numSeconde = bcmod( $diffSecondes, 60 );
$diff[`days`] = abs(bcdiv( $diffHours, 24 ));
$diff[`hours`] = abs($numHours);
$diff[`minutes`] = abs($numMinutes);
$diff[`secondes`] = abs($numSeconde);
return $diff;
break;
}
case `annees` :
case `years` :
case `Y` :
{
$diffDays = bcdiv( $diffSecondes, 86400, 2 );
if ( $roundMode != `none` ) eval( "$diffYears = $roundMode(
bcdiv( $diffDays, 365, 2 ) );" );
else $diffYears = bcdiv( $diffDays, 365, 2 );
return $diffYears;
break;
}
case `jours` :
case `days` :
case `d` :
{
if ( $roundMode != `none` ) eval( "$diffDays = $roundMode(
bcdiv($diffSecondes, 86400, 2) );" );
else $diffDays = bcdiv($diffSecondes, 86400, 2);
return $diffDays;
break;
}
case `heures` :
case `hours` :
case `H` :
{
if ( $roundMode != `none` ) eval( "$diffHours = $roundMode(
bcdiv( $diffSecondes, 3600, 2 ) );" );
else $diffHours = bcdiv( $diffSecondes, 3600, 2 );
return $diffHours;
break;
}
case `minutes` :
case `mins` :
case `i` :
{
if ( $roundMode != `none` ) eval( "$diffMinutes = $roundMode(
bcdiv( $diffSecondes, 60, 2 ) );" );
else $diffMinutes = bcdiv( $diffSecondes, 60, 2 );
return $diffMinutes;
break;
}
default :
{
return $diffSecondes;
break;
}
}
}
}
/**
* Les fonction qui suivent permettent de vérifier si la date courante :
* some function to check if current date (object date) :
* est égale à $date / is equal to $date -> is_eq
* est plus grande que $date / is greater than $date -> is_gt
* est plus grande ou égale à $date / is greater than or equal to
$date -> is_gte
* ...
*/
function is_eq( $date ) {
$myTimestamp = $this->date_to_timestamp( $date );
if ( $this->timestamp == $myTimestamp ) return true;
else return false;
}

function is_gt( $date ) {
$myTimestamp = $this->date_to_timestamp( $date );
if ( $this->timestamp > $myTimestamp ) return true;
else return false;
}

function is_gte( $date ) {
$myTimestamp = $this->date_to_timestamp( $date );
if ( $this->timestamp >= $myTimestamp ) return true;
else return false;
}

function is_lt( $date ) {
$myTimestamp = $this->date_to_timestamp( $date );
if ( $this->timestamp < $myTimestamp ) return true;
else return false;
}

function is_lte( $date ) {
$myTimestamp = $this->date_to_timestamp( $date );
if ( $this->timestamp <= $myTimestamp ) return true;
else return false;
}

### useful stuff from DateMath.php
# -- this one is modified to match my language
function day_of_week( $numeric = false ) {
if ( $numeric ) {
return date(`w`, $this->timestamp);
} else {
return $this->lgueDays[date(`l`, $this->timestamp)];
}
}

function day_of_year() {
return date(`z`, $this->timestamp);
}

function week_of_year() {
return date(`W`, $this->timestamp);
}

function days_in_month() {
return date(`t`, $this->timestamp);
}

function is_leap_year() {
return date(`L`, $this->timestamp);
}

function first_day_in_month( $numeric = false ) {
$firstDay = mktime( 0, 0, 0, date(`m`, $this->timestamp), 1,
date(`Y`, $this->timestamp) );
if ( $numeric ) {
return date(`w`, $firstDay);
} else {
return $this->lgueDays[date(`l`, $firstDay)];
}
}

/**
*
*/

function _en_notations_list( $notationsType ) {
$enNotations = array_keys( $notationsType );
return `(`.implode( `|`, $enNotations ).`)`;
}
}
?>

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