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<?php function compound(array $arr) { $cache=array(); $rst=""; foreach($arr as $v) { if(empty($cache) || $v==end($cache)+1) { $cache[]=$v; } else { if(!empty($rst)) $rst.=","; if(count($cache)>2) $rst.=reset($cache)."-".end($cache); else $rst.=implode(",",$cache); $cache=array($v); } } if(!empty($rst)) $rst.=","; if(count($cache)>2) $rst.=reset($cache)."-".end($cache); else $rst.=implode(",",$cache); return $rst; } echo compound(array(1,2,3,5,6))."\n"; // gets "1-3,5,6" echo compound(array(1,3,4,5,6)); // gets "1,3-6"
Output for 5.1.1 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
1-3,5,6 1,3-6
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/untCF on line 26
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_ARRAY, expecting '&' or T_VARIABLE in /in/untCF on line 2
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_ARRAY, expecting ')' in /in/untCF on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_ARRAY, expecting ')' in /in/untCF on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/untCF on line 2
Process exited with code 255.
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254.27 ms | 401 KiB | 313 Q