`format` vs static `formatObject`

** The `formatObject` is NOT slower!  (on PHP 5.5) **

Use either the `format` method or the static `formatObject`.

Since `formatObject` is doing the work of `new IntlDateFormatter` with the provided pattern, the instantiation line must be included in the loop!

Another debunked flawed false test!

php -v
PHP 5.5.26-1+deb.sury.org~precise+1 (cli) (built: Jun 15 2015 10:04:01)
Copyright (c) 1997-2015 The PHP Group
Zend Engine v2.5.0, Copyright (c) 1998-2015 Zend Technologies
    with Zend OPcache v7.0.6-dev, Copyright (c) 1999-2015, by Zend Technologies
    with Xdebug v2.3.2, Copyright (c) 2002-2015, by Derick Rethans

<?php
date_default_timezone_set('America/Los_Angeles');
$n = 3000;

$dt = new DateTime('2015-01-03 12:32:44');

$time[] = microtime(true);
for($i=0;$i<$n;$i++) {
    $a = IntlDateFormatter::formatObject($dt, 'MMMM dd', 'hu_HU');
}
echo "$a\n";
$time[] = microtime(true);
for($i=0;$i<$n;$i++) {
    $df = new IntlDateFormatter('hu_HU', IntlDateFormatter::SHORT, IntlDateFormatter::NONE, null, null, 'MMMM dd');
    $a = $df->format($dt);
}
echo "$a\n";
$time[] = microtime(true);

for($j=1;$j<count($time);$j++) {
    printf("%fs\n", $time[$j]-$time[$j-1]);
}
?>

`formatObject` : 0.336579s
`format` : 0.391158s

If you want to format a date according to a specific scheme and in a local language, here is the link to the reference of the formatting codes to use, I did not find it directly in the documentation:
https://unicode-org.github.io/icu/userguide/format_parse/datetime/#date-field-symbol-table
 Here is a test using a DateTime object :

<?php

// must be required by the server
date_default_timezone_set( 'Europe/Paris' );

// instantiate a new DateTime object
$dateTimeObj = new DateTime('now', new DateTimeZone('Europe/Paris'));

// format the date with a specific scheme
// the 3 parameters are [ DateTimeObject, ICU Scheme, locale code string ]
$dateFromatted = IntlDateFormatter::formatObject( $dateTimeObj, "eee d MMMM y à HH:mm", 'fr' );

// test :
echo ucwords($dateFromatted);
// output : Jeu. 7 Avril 2022 à 04:36 // formatted as i want 

?>

`format` vs static `formatObject`

The `formatObject` is slower! `format` is more then 10-13 times faster! (on PHP 5.5) Use the `format` method instead of the static `formatObject`.

php -v
PHP 5.5.26-1+deb.sury.org~precise+1 (cli) (built: Jun 15 2015 10:04:01) 
Copyright (c) 1997-2015 The PHP Group
Zend Engine v2.5.0, Copyright (c) 1998-2015 Zend Technologies
    with Zend OPcache v7.0.6-dev, Copyright (c) 1999-2015, by Zend Technologies
    with Xdebug v2.3.2, Copyright (c) 2002-2015, by Derick Rethans

<?php
$n = 3000;

$dt = new \DateTime('2015-01-03 12:32:44');
$df = new IntlDateFormatter('hu_HU', IntlDateFormatter::SHORT, IntlDateFormatter::NONE);
$df->setPattern('MMMM dd');

$time[] = microtime(true);
for($i=0;$i<$n;$i++) {
    $a = IntlDateFormatter::formatObject($dt, 'MMMM dd', 'hu_HU');
}
echo "$a\n";
$time[] = microtime(true);
for($i=0;$i<$n;$i++) {
    $a = $df->format($dt);
}
echo "$a\n";
$time[] = microtime(true);

for($j=1;$j<count($time);$j++) {
    printf("%fs\n", $time[$j]-$time[$j-1]);
}
?>

`formatObject` : 0.458248 s
`format` : 0.033759 s

It's still slower on php7.1, but not that dramatic anymore, here I got something around 5times slower