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<?php $arr = array( '100'=>array('age'=>22,'name'=>'jack','date'=>'2014'), '110'=>array('age'=>23,'name'=>'mary','date'=>'2012'), '120'=>array('age'=>24,'name'=>'lilei','date'=>'2015') ); uasort($arr, function($a1, $b) { if( $a['age'] === $b['age'] ){ return $a['date'] - $b['date']; } return $a['age'] - $b['age']; }); print_r($arr);
Output for 8.3.0 - 8.3.4, 8.3.6
Warning: Undefined variable $a in /in/S4XaH on line 10 Warning: Trying to access array offset on null in /in/S4XaH on line 10 Warning: Undefined variable $a in /in/S4XaH on line 13 Warning: Trying to access array offset on null in /in/S4XaH on line 13 Warning: Undefined variable $a in /in/S4XaH on line 10 Warning: Trying to access array offset on null in /in/S4XaH on line 10 Warning: Undefined variable $a in /in/S4XaH on line 13 Warning: Trying to access array offset on null in /in/S4XaH on line 13 Array ( [100] => Array ( [age] => 22 [name] => jack [date] => 2014 ) [110] => Array ( [age] => 23 [name] => mary [date] => 2012 ) [120] => Array ( [age] => 24 [name] => lilei [date] => 2015 ) )
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Warning: Undefined variable $a in /in/S4XaH on line 10 Warning: Trying to access array offset on null in /in/S4XaH on line 10 Warning: Undefined variable $a in /in/S4XaH on line 13 Warning: Trying to access array offset on null in /in/S4XaH on line 13 Warning: Undefined variable $a in /in/S4XaH on line 10 Warning: Trying to access array offset on null in /in/S4XaH on line 10 Warning: Undefined variable $a in /in/S4XaH on line 13 Warning: Trying to access array offset on null in /in/S4XaH on line 13 Array ( [100] => Array ( [age] => 22 [name] => jack [date] => 2014 ) [110] => Array ( [age] => 23 [name] => mary [date] => 2012 ) [120] => Array ( [age] => 24 [name] => lilei [date] => 2015 ) )
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18
Warning: Undefined variable $a in /in/S4XaH on line 10 Warning: Trying to access array offset on value of type null in /in/S4XaH on line 10 Warning: Undefined variable $a in /in/S4XaH on line 13 Warning: Trying to access array offset on value of type null in /in/S4XaH on line 13 Warning: Undefined variable $a in /in/S4XaH on line 10 Warning: Trying to access array offset on value of type null in /in/S4XaH on line 10 Warning: Undefined variable $a in /in/S4XaH on line 13 Warning: Trying to access array offset on value of type null in /in/S4XaH on line 13 Array ( [100] => Array ( [age] => 22 [name] => jack [date] => 2014 ) [110] => Array ( [age] => 23 [name] => mary [date] => 2012 ) [120] => Array ( [age] => 24 [name] => lilei [date] => 2015 ) )
Output for 7.4.0 - 7.4.33
Notice: Undefined variable: a in /in/S4XaH on line 10 Notice: Trying to access array offset on value of type null in /in/S4XaH on line 10 Notice: Undefined variable: a in /in/S4XaH on line 13 Notice: Trying to access array offset on value of type null in /in/S4XaH on line 13 Notice: Undefined variable: a in /in/S4XaH on line 10 Notice: Trying to access array offset on value of type null in /in/S4XaH on line 10 Notice: Undefined variable: a in /in/S4XaH on line 13 Notice: Trying to access array offset on value of type null in /in/S4XaH on line 13 Array ( [100] => Array ( [age] => 22 [name] => jack [date] => 2014 ) [110] => Array ( [age] => 23 [name] => mary [date] => 2012 ) [120] => Array ( [age] => 24 [name] => lilei [date] => 2015 ) )
Output for 7.3.32 - 7.3.33
Array ( [100] => Array ( [age] => 22 [name] => jack [date] => 2014 ) [110] => Array ( [age] => 23 [name] => mary [date] => 2012 ) [120] => Array ( [age] => 24 [name] => lilei [date] => 2015 ) )
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31
Notice: Undefined variable: a in /in/S4XaH on line 10 Notice: Undefined variable: a in /in/S4XaH on line 13 Notice: Undefined variable: a in /in/S4XaH on line 10 Notice: Undefined variable: a in /in/S4XaH on line 13 Array ( [100] => Array ( [age] => 22 [name] => jack [date] => 2014 ) [110] => Array ( [age] => 23 [name] => mary [date] => 2012 ) [120] => Array ( [age] => 24 [name] => lilei [date] => 2015 ) )
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.38
Notice: Undefined variable: a in /in/S4XaH on line 10 Notice: Undefined variable: a in /in/S4XaH on line 13 Notice: Undefined variable: a in /in/S4XaH on line 10 Notice: Undefined variable: a in /in/S4XaH on line 13 Array ( [120] => Array ( [age] => 24 [name] => lilei [date] => 2015 ) [110] => Array ( [age] => 23 [name] => mary [date] => 2012 ) [100] => Array ( [age] => 22 [name] => jack [date] => 2014 ) )
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235.94 ms | 403 KiB | 294 Q