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<?php print_r( array_unique(array('bb','bb2','bb','bb','bb','bb','bb','bb','bb','bb','bb','bb','bb','bb','bb','aa','aa','aa','aa','aa','aa','aa','bb','bb','bb','bb','bb','aa','aa','aa','a','aaa','aa','aa','aa','test','aa','aa','data0','aa','aa','data0','aa','aa','data0','aa','aa','data0','aa','aa','data0','aa','platba','aa','aa','aa','aa','aaa','info','aa','cha','cha2','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','db1','db2','aa','aa','bb','bb','aa','aa','taaa','tinfo','aag','a','udaje','udaje2','ucet','item','item','item2','item3','ax','item','aa','aa','aa','aa','aa','aa','aa','aa','a','aaac','aaac','aaac','aaac','aaac','aa','aaac','tmp','a','a','a','user','aa','aa','aa','aa','aa','user','aa','aa','aa','a','a','aaac','aaac','aaac2','aa','aa','aa','aa','aa','bb','aa','aa','aa','aa','aa','aa','aa','bb','bb2','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','bb','aa','test','test','test','aa','aa','aa','aa','aa','aa','test','test','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','tmp','tmp','tmp','tmp','tmp','tmp','tmp','tmp','aa','bb','aaa','aa','aa','aa','aa','aa','aa','aa','aa','aa','bb','aa','aa','aa','aa','aaa','aa','aa','aa','aa','aa','aa','aa','aa','bb','aa','aa','aa','aa','aa','bb','aa','aa','cha','cha2','cha','cha3','aa','a','aaac','aaac','aaac','aaac','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aaac','aaac','aaac2','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','dd','bb','aa','aa','aa','aa','aa','aa','aa','b','aa','b','b','aa','b','b','aa','a','a','a','platba','user','bb','aa','aa','aa','aa','aa','aa','a','aa','aa','aa','aa','bb','aa','aa','aa','d','a','aa','aa','info','aa','aa','aa','aa','aa','revize','kurz','revize','kurz','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aax','aax','aax','aax','aax','aa','aax','aax','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','a','aa','aa','aa','hra','aa','aa','bb','aa','aa','aa','aa','aa','aa','bb','aa','aa','a','a','bb','bb','aa','aa','aa','aa','aa','aa','cha2','cha','cha3','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','aa','info','dnyx','krajex','aa','aa','bb','aa','aa','aa','aa','aa','aa','bb','aa','aa','aa','aa','aa','aa','a','aa','service2','aa','a','a','aa','a','aa','test','aa','aa','aa','info','dnyx','horoskop','dat','od','revize','kurz','revize','kurz','aa','aa','aa','test','aa','info','dnyx','horoskop','dat','od','aa','test','aa','aa','aa','info','dnyx','horoskop','dat','od','revize','kurz','revize','kurz','aa','aa','aa','aa','aa','aa','a','a','a','a','aa','a','aa','bb','aa','a','aa','bb','aa','aa','bb','dat','od','od','od','kurz','aa','aa','bb','aa','aa','aa','aa','test','test1','test','test','test','test','test','test','test','test','test','test','test','test','test','test','test','test','test','test','test','test','test','test','test','test','test','aa','aa','aa','aa','test2','test','aa','aa','bb','test','aa','aa','aa','aa','aa','user','user','user','user','user','user','user','a','aa','tmp2','a','aa','aa','aa','aa','a','a','a','a','a','a','aa','aa','aa','aa','aa','aa','aa','user','user','user','user','user','user','a','aa','tmp2','a','aa','aa','aa','aa','a','a','a','a','a','a','aa','aa','aa','aa','aa','aa','aa','tmp2','a','aa','tmp2','a','aa','aa','aa','aa','a','aa','aa','aa','aa','aa','aa','aa','aa','aaa','aa','taaa','tinfo','aa','aa','aa','aa','a','aa','aa','a','aa','aa','a','aa','a','aa','a','aa','a','aa','a','aa','a','a','a','aa','aa','aa','a','aag','aa','aa','aa','aa','aa','a','aa','aa','a','aa','aa','a','aa','b','b','b','b','b','b','b','b','b','aa','aa','aa','aa','a','aa','aa','aa','aa','aa','aa','aa','a','a','aa','aaw','saa','aaa','aax','sms','row','out','a','aaac','aacc','aadd','aac','tmp','tmp2','bonus','b','ab','phpsms','bb','cc','service','con','aan','dd','provize','av','y','a2','x')) );
Output for 4.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
Array ( [0] => bb [1] => bb2 [15] => aa [30] => a [31] => aaa [35] => test [38] => data0 [52] => platba [58] => info [60] => cha [61] => cha2 [99] => db1 [100] => db2 [107] => taaa [108] => tinfo [109] => aag [111] => udaje [112] => udaje2 [113] => ucet [114] => item [116] => item2 [117] => item3 [118] => ax [129] => aaac [136] => tmp [140] => user [154] => aaac2 [274] => cha3 [310] => dd [319] => b [348] => d [358] => revize [359] => kurz [377] => aax [410] => hra [456] => dnyx [457] => krajex [476] => service2 [489] => horoskop [490] => dat [491] => od [554] => test1 [584] => test2 [604] => tmp2 [737] => aaw [738] => saa [741] => sms [742] => row [743] => out [746] => aacc [747] => aadd [748] => aac [751] => bonus [753] => ab [754] => phpsms [756] => cc [757] => service [758] => con [759] => aan [761] => provize [762] => av [763] => y [764] => a2 [765] => x )
Output for hhvm-3.10.0

Process exited with code 153.