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<?php $array = array( array('apn' => 345345345, 'sqft' => 1200, 'address' => '323 Pacific Ave.'), array('apn' => 345345342, 'sqft' => 1421, 'address' => '324 Pacific Ave.'), array('apn' => 345345346, 'sqft' => 1012, 'address' => '325 Pacific Ave.'), array('apn' => 345345347, 'sqft' => 1093, 'address' => '328 Pacific Ave.'), array('apn' => 345345353, 'sqft' => 1121, 'address' => '12 Lincoln Ave.'), array('apn' => 345345351, 'sqft' => 1643, 'address' => '13 Lincoln Ave.'), array('apn' => 345345352, 'sqft' => 1222, 'address' => '14 Lincoln Ave.') ); usort($array, function($x, $y) { $x = preg_split('/^(\d+)\s+(.*)/', $x['address'], -1 , 3); $y = preg_split('/^(\d+)\s+(.*)/', $y['address'], -1 , 3); $x[2] = $x[0] % 2; $y[2] = $y[0] % 2; if($x[1]==$y[1]) { if($x[2]==$y[2]) return $x[0]<$y[0]?-1:$x[0]!=$y[0]; return $x[2]>$y[2]?:1; } return $x[1]<$y[1]?:1; }); var_dump($array);

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