public
Created

getAgeFromBirthday for php

  • Download Gist
getAge.php
PHP
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51
<?php
// floor((Ymd - Ymd)/10000)
// 月齢、日にちまで求めないならこれで十分
function getAge($birthday, $today)
{
return (int)floor(((int)$today-(int)$birthday)/10000);
}
 
 
// test
if (debug_backtrace()) return;
$tests = array(
array('19960120', '20120119', 15),
array('19960120', '20120120', 16),
array('19960228', '20110227', 14),
array('19960228', '20110228', 15),
array('19960228', '20110301', 15),
array('19960229', '20110227', 14),
array('19960229', '20110228', 14),
array('19960229', '20110301', 15),
array('19970228', '20120227', 14),
array('19970228', '20120228', 15),
array('19970228', '20120229', 15),
array('19970228', '20120301', 15),
);
foreach ($tests as $t)
{
$ret = getAge($t[0], $t[1]);
echo sprintf("%s: %s -> %s = %s%s\n",
($ret === $t[2] ? 'ok' : 'ng'),
$t[0],
$t[1],
var_export($ret, true),
($ret === $t[2] ? '' : ' => ' . var_export($t[2], true))
);
}
/*
result
ok: 19960120 -> 20120119 = 15
ok: 19960120 -> 20120120 = 16
ok: 19960228 -> 20110227 = 14
ok: 19960228 -> 20110228 = 15
ok: 19960228 -> 20110301 = 15
ok: 19960229 -> 20110227 = 14
ok: 19960229 -> 20110228 = 14
ok: 19960229 -> 20110301 = 15
ok: 19970228 -> 20120227 = 14
ok: 19970228 -> 20120228 = 15
ok: 19970228 -> 20120229 = 15
ok: 19970228 -> 20120301 = 15
*/
getAgeFromBirthday.php
PHP
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185
<?php
/**
* getAgeFromBirthday
*
* @param string $birthday
* @param string|array $format %Y %y %M %m %D %d, string or array('year', 'month', 'day')
* @param string $now = null
* @return string
*/
function getAgeFromBirthday($birthday, $format = '%y', $today = null)
{
$birthday = new DateTime($birthday);
$birthday->setTime(0, 0, 0);
$today = new DateTime($today);
$today->setTime(0, 0, 0);
if ($today <= $birthday) return false;
 
$birthday_m = (int)$birthday->format('n');
$today_m = (((int)$today->format('Y') - (int)$birthday->format('Y')) * 12)
+ (int)$today->format('n');
$diff_m = ($today_m - $birthday_m);
 
if ($today->format('d') < $birthday->format('d')) {
$diff_m--;
$birthday->setDate(
$today->format('y'),
$today->format('m') - 1,
$birthday->format('d')
);
} else {
$birthday->setDate(
$today->format('y'),
$today->format('m'),
$birthday->format('d')
);
}
 
$diff_y = ($diff_m - ($diff_m % 12)) / 12;
$diff_m -= ($diff_y * 12);
 
//(PHP 5 >= 5.3.0)
$diff_d = (int)$birthday->diff($today)->format('%d');
//(PHP 5 < 5.3.0)
//$diff_d = ($birthday->format('m') == $today->format('m'))
// ? ((int)$today->format('j') - (int)$birthday->format('j'))
// : (((int)$birthday->format('t') - (int)$birthday->format('j')) + (int)$today->format('j'));
 
if (!$diff_y && !$diff_m && !$diff_d) {
return false;
} elseif (is_null($format)) {
return array(
$diff_y,
$diff_m,
$diff_d,
);
}
 
$formats = is_array($format) ? $format : array('', '', '', $format);
// like DateInterval::format
$replace_patterns = array(
'%Y' => '%1$02d',
'%y' => '%1$d',
'%M' => '%2$02d',
'%m' => '%2$d',
'%D' => '%3$02d',
'%d' => '%3$d',
);
//(PHP 5 >= 5.3.0)
array_walk($formats, function (&$val, $key) use ($replace_patterns) {
$val = str_replace(
array_keys($replace_patterns),
array_values($replace_patterns),
$val
);
});
//(PHP 5 < 5.3.0)
//array_walk($formats,
// create_function('&$val, $key, $p', '$val = str_replace(array_keys($p), array_values($p), $val);'),
// $replace_patterns);
 
$ret = '';
if (isset($formats[0]) && $diff_y) $ret .= sprintf($formats[0], $diff_y, $diff_m, $diff_d);
if (isset($formats[1]) && $diff_m) $ret .= sprintf($formats[1], $diff_y, $diff_m, $diff_d);
if (isset($formats[2]) && $diff_d) $ret .= sprintf($formats[2], $diff_y, $diff_m, $diff_d);
if (isset($formats[3])) $ret .= sprintf($formats[3], $diff_y, $diff_m, $diff_d);
return $ret;
}
 
 
// test
if (debug_backtrace()) return;
$tests = array(
array('2012-03-02', '2012-03-01', '%y-%m-%d', false),
array('2012-03-02', '2012-03-02', '%y-%m-%d', false),
array('2012-03-02', '2012-03-03', '%y-%m-%d', '0-0-1'),
array('2007-03-12', '2012-04-11', '%y', '5'),
array('2001-01-10', '2012-01-11', '%y歳%mヵ月', '11歳0ヵ月'),
array('2001-06-12', '2012-01-11', '%y歳%mヵ月', '10歳6ヵ月'),
array('2001-01-10', '2012-01-11', array('%y歳', '%mヵ月'), '11歳'),
array('2001-06-12', '2012-01-11', array('%y歳', '%mヵ月'), '10歳6ヵ月'),
array('2001-01-10', '2012-01-11', array('%y歳', '%mヵ月', '%d日'), '11歳1日'),
array('2001-06-12', '2012-01-12', array('%y歳', '%mヵ月', '%d日'), '10歳7ヵ月'),
array('2011-06-12', '2012-01-12', array('%y歳', '%mヵ月', '%d日'), '7ヵ月'),
array('2000-09-01', '2012-03-11', null, array(11, 6, 10)),
array('2011-09-01', '2012-03-01', '%y-%m-%d', '0-6-0'),
array('2011-09-10', '2012-03-10', '%y-%m-%d', '0-6-0'),
array('2011-09-01', '2012-09-01', '%y-%m-%d', '1-0-0'),
array('2011-09-10', '2012-09-09', '%y-%m-%d', '0-11-30'),
array('2011-07-10', '2012-07-09', '%y-%m-%d', '0-11-29'),
array('2010-11-30', '2012-12-31', '%y-%m-%d', '2-1-1'),
array('2010-10-31', '2012-11-30', '%y-%m-%d', '2-0-30'),
array('2012-02-29', '2013-02-28', '%y-%m-%d', '0-11-30'),
array('2012-02-29', '2013-03-01', '%y-%m-%d', '1-0-0'),
array('2011-02-28', '2012-02-29', '%y-%m-%d', '1-0-1'),
array('2011-03-01', '2012-02-29', '%y-%m-%d', '0-11-28'),
array('2011-02-20', '2012-03-10', '%y-%m-%d', '1-0-19'),
array('2012-02-20', '2013-03-10', '%y-%m-%d', '1-0-18'),
array('1996-01-20', '2012-01-19', '%y', '15'),
array('1996-01-20', '2012-01-20', '%y', '16'),
array('1996-02-28', '2011-02-27', '%y', '14'),
array('1996-02-28', '2011-02-28', '%y', '15'),
array('1996-02-28', '2011-03-01', '%y', '15'),
array('1996-02-29', '2011-02-27', '%y', '14'),
array('1996-02-29', '2011-02-28', '%y', '14'),
array('1996-02-29', '2011-03-01', '%y', '15'),
array('1997-02-28', '2012-02-27', '%y', '14'),
array('1997-02-28', '2012-02-28', '%y', '15'),
array('1997-02-28', '2012-02-29', '%y', '15'),
array('1997-02-28', '2012-03-01', '%y', '15'),
);
foreach ($tests as $t)
{
$ret = getAgeFromBirthday($t[0], $t[2], $t[1]);
echo sprintf("%s: %s -> %s = %s%s\n",
($ret === $t[3] ? 'ok' : 'ng'),
$t[0],
$t[1],
var_export($ret, true),
($ret === $t[3] ? '' : ' => ' . var_export($t[3], true))
);
}
/*
result
ok: 2012-03-02 -> 2012-03-01 = false
ok: 2012-03-02 -> 2012-03-02 = false
ok: 2012-03-02 -> 2012-03-03 = '0-0-1'
ok: 2007-03-12 -> 2012-04-11 = '5'
ok: 2001-01-10 -> 2012-01-11 = '11歳0ヵ月'
ok: 2001-06-12 -> 2012-01-11 = '10歳6ヵ月'
ok: 2001-01-10 -> 2012-01-11 = '11歳'
ok: 2001-06-12 -> 2012-01-11 = '10歳6ヵ月'
ok: 2001-01-10 -> 2012-01-11 = '11歳1日'
ok: 2001-06-12 -> 2012-01-12 = '10歳7ヵ月'
ok: 2011-06-12 -> 2012-01-12 = '7ヵ月'
ok: 2000-09-01 -> 2012-03-11 = array (
0 => 11,
1 => 6,
2 => 10,
)
ok: 2011-09-01 -> 2012-03-01 = '0-6-0'
ok: 2011-09-10 -> 2012-03-10 = '0-6-0'
ok: 2011-09-01 -> 2012-09-01 = '1-0-0'
ok: 2011-09-10 -> 2012-09-09 = '0-11-30'
ok: 2011-07-10 -> 2012-07-09 = '0-11-29'
ok: 2010-11-30 -> 2012-12-31 = '2-1-1'
ok: 2010-10-31 -> 2012-11-30 = '2-0-30'
ok: 2012-02-29 -> 2013-02-28 = '0-11-30'
ok: 2012-02-29 -> 2013-03-01 = '1-0-0'
ok: 2011-02-28 -> 2012-02-29 = '1-0-1'
ok: 2011-03-01 -> 2012-02-29 = '0-11-28'
ok: 2011-02-20 -> 2012-03-10 = '1-0-19'
ok: 2012-02-20 -> 2013-03-10 = '1-0-18'
ok: 1996-01-20 -> 2012-01-19 = '15'
ok: 1996-01-20 -> 2012-01-20 = '16'
ok: 1996-02-28 -> 2011-02-27 = '14'
ok: 1996-02-28 -> 2011-02-28 = '15'
ok: 1996-02-28 -> 2011-03-01 = '15'
ok: 1996-02-29 -> 2011-02-27 = '14'
ok: 1996-02-29 -> 2011-02-28 = '14'
ok: 1996-02-29 -> 2011-03-01 = '15'
ok: 1997-02-28 -> 2012-02-27 = '14'
ok: 1997-02-28 -> 2012-02-28 = '15'
ok: 1997-02-28 -> 2012-02-29 = '15'
ok: 1997-02-28 -> 2012-03-01 = '15'
*/

Please sign in to comment on this gist.

Something went wrong with that request. Please try again.