php - Optimized solution for Comparison in 2D array -
so have 2d array.
array (size=6) 'us-20150018889-a1' => array (size=5) 0 => string 'us-13795596' (length=11) 1 => string 'us-13713626' (length=11) 2 => string 'us-11361942' (length=11) // match 1 3 => string 'wo-ch2003000577' (length=15) 4 => string 'us-20150018889' (length=14) 'us-20140018803-a1' => array (size=2) 0 => string 'us-11159064' (length=11) 1 => string 'us-20140018803' (length=14) 'us-8523858-b2' => array (size=17) 0 => string 'us-20060287652' (length=14) 1 => string 'cn-101296665' (length=12) 2 => string 'ca-2613278' (length=10) 3 => string 'za-200711136' (length=12) 4 => string 'kr-101334253' (length=12) 5 => string 'jp-5138587' (length=10) 6 => string 'tw-200709800' (length=12) 7 => string 'ep-1893110' (length=10) 8 => string 'in-10213delnp2007' (length=17) 9 => string 'nz-564765' (length=9) 11 => string 'kr-1020080041619' (length=16) 13 => string 'wo-2007001945' (length=13) 14 => string 'tw-i392473' (length=10) 15 => string 'au-2006262507' (length=13) 17 => string 'br-pi0612275' (length=12) 18 => string 'us-8523858' (length=10) 19 => string 'jp-2008546479' (length=13) 'us-8852245-b2' => array (size=5) 0 => string 'us-13713626' (length=11) 1 => string 'us-11361942' (length=11) // match 1 2 => string 'wo-ch0300577' (length=12) // match 2 3 => string 'us-20130197589' (length=14) 5 => string 'us-8852245' (length=10) 'us-8845698-b2' => array (size=4) 0 => string 'us-11361942' (length=11) // match 1 1 => string 'wo-ch0300577' (length=12) // match 2 2 => string 'us-20130116735' (length=14) 3 => string 'us-8845698' (length=10) 'us-8343196-b2' => array (size=29) 0 => string 'wo-ch03000577' (length=13) 1 => string 'ch-0300577' (length=10) 2 => string 'ep-03818256' (length=11) 3 => string 'wo-2005018472' (length=13) 5 => string 'us-20060235400' (length=14) 6 => string 'au-2003254686' (length=13) 8 => string 'de-50312893' (length=11) 9 => string 'ep-1731107' (length=10) 11 => string 'br-pi0318428' (length=12) 12 => string 'ep-1741397' (length=10) 14 => string 'in-395delnp2006' (length=15) 15 => string 'ca-2536960' (length=10) 16 => string 'jp-2007506450' (length=13) 17 => string 'cn-1819799' (length=10) 18 => string 'ar-045493' (length=9) 19 => string 'tw-i329506' (length=10) 20 => string 'de-20321245' (length=11) 21 => string 'de-20321551' (length=11) 22 => string 'de-20321552' (length=11) 26 => string 'ep-1658015' (length=10) 27 => string 'in-226296' (length=9) 29 => string 'us-8343196' (length=10) 30 => string 'jp-4999327' (length=10) 33 => string 'cl-2004002168' (length=13) 34 => string 'cl-21682004' (length=11) 35 => string 'tw-200514540' (length=12) 36 => string 'de-20321151' (length=11) 37 => string 'de-20321244' (length=11) 38 => string 'nz-545392' (length=9) i want compare elements of each index elements of other indexes. , if of elements 1 index matches of elements index, want group 2 indexes together, cannot lose index values either.
i know array_intersect can comparing , grouping can done after that, require 2 loops, (n2 complexity)
is there better way can reduce complexity of logic?
i want see indexes related each other. (relation being common elements)
p/s: provide answers if have more optimized way, because i've implemented via normal logic.
php's inbuilt functions helpful.
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