# PHP calculates the difference between two dates

Source: Internet
Author: User
Tags date1
PHP calculates the difference between two dates
 \$ Date1 = date ('Y-m-D '); \$ Date2 = "2015-12-04 "; \$ Diff = abs (strtotime (\$ date2)-strtotime (\$ date1 )); \$ Years = floor (\$ diff/(365*60*60*24 )); \$ Months = floor (\$ diff-\$ years * 365*60*60*24)/(30*60*60*24 )); \$ Days = floor (\$ diff-\$ years * 365*60*60*24-\$ months * 30*60*60*24) /(60*60*24 )); Printf ("% d years, % d months, % d days \ n", \$ years, \$ months, \$ days ); -------------------------------------------------------- OR \$ Date1 = new DateTime ("2007-03-24 "); \$ Date2 = new DateTime ("2009-06-26 "); \$ Interval = \$ date1-> diff (\$ date2 ); Echo "difference". \$ interval-> y. "years,". \$ interval-> m. "months,". \$ interval-> d. "days "; // Shows the total amount of days (not pided into years, months and days like above) Echo "difference". \$ interval-> days. "days "; -------------------------------------------------------- OR /** * Calculate differences between two dates with precise semantics. Based on PHPs DateTime: diff () * Implementation by Derick Rethans. Ported to PHP by e il H, 2011-05-02. No rights reserved. * * See here for original code: * Http://svn.php.net/viewvc/php/php-src/trunk/ext/date/lib/tm2unixtime.c? Revision = 302890 & view = markup * Http://svn.php.net/viewvc/php/php-src/trunk/ext/date/lib/interval.c? Revision = 298973 & view = markup */ Function _ date_range_limit (\$ start, \$ end, \$ adj, \$ a, \$ B, \$ result) { If (\$ result [\$ a] <\$ start ){ \$ Result [\$ B]-= intval (\$ start-\$ result [\$ a]-1)/\$ adj) + 1; \$ Result [\$ a] + = \$ adj * intval (\$ start-\$ result [\$ a]-1)/\$ adj + 1 ); } If (\$ result [\$ a] >=\$ end ){ \$ Result [\$ B] + = intval (\$ result [\$ a]/\$ adj ); \$ Result [\$ a]-= \$ adj * intval (\$ result [\$ a]/\$ adj ); } Return \$ result; } Function _ date_range_limit_days (\$ base, \$ result) { \$ Days_in_month_leap = array (31, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31 ); \$ Days_in_month = array (31, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31 ); _ Date_range_limit (1, 13, 12, "m", "y", & \$ base ); \$ Year = \$ base ["y"]; \$ Month = \$ base ["m"]; If (! \$ Result ["invert"]) { While (\$ result ["d"] <0 ){ \$ Month --; If (\$ month <1 ){ \$ Month + = 12; \$ Year --; } \$ Leapyear = \$ year % 400 = 0 | (\$ year % 100! = 0 & \$ year % 4 = 0 ); \$ Days = \$ leapyear? \$ Days_in_month_leap [\$ month]: \$ days_in_month [\$ month]; \$ Result ["d"] + = \$ days; \$ Result ["m"] --; } } Else { While (\$ result ["d"] <0 ){ \$ Leapyear = \$ year % 400 = 0 | (\$ year % 100! = 0 & \$ year % 4 = 0 ); \$ Days = \$ leapyear? \$ Days_in_month_leap [\$ month]: \$ days_in_month [\$ month]; \$ Result ["d"] + = \$ days; \$ Result ["m"] --; \$ Month ++; If (\$ month> 12 ){ \$ Month-= 12; \$ Year ++; } } } Return \$ result; } Function _ date_normalize (\$ base, \$ result) { \$ Result = _ date_range_limit (0, 60, 60, "s", "I", \$ result ); \$ Result = _ date_range_limit (0, 60, 60, "I", "h", \$ result ); \$ Result = _ date_range_limit (0, 24, 24, "h", "d", \$ result ); \$ Result = _ date_range_limit (0, 12, 12, "m", "y", \$ result ); \$ Result = _ date_range_limit_days (& \$ base, & \$ result ); \$ Result = _ date_range_limit (0, 12, 12, "m", "y", \$ result ); Return \$ result; } /** * Accepts two unix timestamps. */ Function _ date_diff (\$ one, \$ two) { \$ Invert = false; If (\$ one> \$ two ){ List (\$ one, \$ two) = array (\$ two, \$ one ); \$ Invert = true; } \$ Key = array ("y", "m", "d", "h", "I", "s "); \$ A = array_combine (\$ key, array_map ("intval", explode ("", date ("Y m d H I s", \$ one )))); \$ B = array_combine (\$ key, array_map ("intval", explode ("", date ("Y m d H I s", \$ two )))); \$ Result = array (); \$ Result ["y"] = \$ B ["y"]-\$ a ["y"]; \$ Result ["m"] = \$ B ["m"]-\$ a ["m"]; \$ Result ["d"] = \$ B ["d"]-\$ a ["d"]; \$ Result ["h"] = \$ B ["h"]-\$ a ["h"]; \$ Result ["I"] = \$ B ["I"]-\$ a ["I"]; \$ Result ["s"] = \$ B ["s"]-\$ a ["s"]; \$ Result ["invert"] = \$ invert? 1: 0; \$ Result ["days"] = intval (abs (\$ one-\$ two)/86400 )); If (\$ invert ){ _ Date_normalize (& \$ a, & \$ result ); } Else { _ Date_normalize (& \$ B, & \$ result ); } Return \$ result; } \$ Date = "19:37:22 "; Echo'`';print_r( _date_diff( strtotime(\$date), time() ) );echo '`'; ?>

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