$re = '/(?#Header Cielo 03)^0([\d]{10})([\d]{8})([\d]{8})([\d]{8})([\d]{7})([CIELO]{5})([03]{2})([I|P]{1})([\w\s]{20})([001]{3})([\w\s]{177})$|(?#RO Venda Cielo 03)^1([\d]{10})([\d]{7})([\d\s]{2})([a,\/,\s]{1})([\d\s]{2})(01)([\d]{6})([\d]{6})([\d]{6})([\D\d]{14})([\D\d]{14})([\D\d]{14})([\D\d]{14})([\d]{4})([\d]{5})([\d\s]{14})(00)([\d]{6})([\d]{2})([\d]{6})([\sRA]{1})([\d]{6})([\s]{2})([\d]{13})([\sCA]{1})([\d\S]{9})([\D\d]{14})([\d]{3})([\d]{22})([\d]{4})([\d]{5})([\d]{4})([\d\w\s]{2})([\w\s]{8})([\d]{3})([\s]{15})$|(?#CV Cielo 03)^2([\d]{10})([\d]{7})([\d\D]{19})([\d]{8})([\D\d]{14})([\d]{2})([\d]{2})([\w\s]{3})([\w\s]{6})([\d\s]{20})([\d]{6})([\d]{13})([\d]{2})([\d]{13})([\d\s]{13})([\d]{9})([0-2]{4})([\w\s]{8})([\s|TX|VE]{2})([\d\s]{20})([\d]{6})([\d]{29})([\w\s]{1})([\s]{32})$|(?#RO Pago Cielo 03)^1([\d]{10})([\d]{7})([\d\s]{2})([a,\/,\s]{1})([\d\s]{2})(01)([\d]{6})([\d]{6})([\d]{6})([\D\d]{14})([\D\d]{14})([\D\d]{14})([\D\d]{14})([\d]{4})([\d]{5})([\d\s]{14})(01)([\d]{6})([\d]{2})([\d]{6})([\sRA]{1})([\d]{6})([\s\d]{2})([\d]{13})([\sCA]{1})([\d\S]{9})([\D\d]{14})([\d]{3})([\d]{22})([\d]{4})([\d]{5})([\d]{4})([\d\w\s]{2})([\w\s]{8})([\d]{3})([\s]{15})$|(?#RO Serviço Cielo 03 Ajuste e Serviços)^1([\d]{10})([\d]{7})([\d\s]{2})([a,\/,\s]{1})([\d\s]{2})(02|03|04|05)([\d]{6})([\d]{6})([\d]{6})([\D\d]{14})([\D\d]{14})([\D\d]{14})([\D\d]{14})([\d]{4})([\d]{5})([\d\s]{14})(00|01|02|03)([\d]{6})([\d]{2})([\d]{6})([\sRA]{1})([\d]{6})([\s\d]{2})([\d]{13})([\sCA]{1})([\d\S]{9})([\D\d]{14})([\d]{3})([\d]{22})([\d]{4})([\d]{5})([\d]{4})([\d\w\s]{2})([\w\s]{8})([\d]{3})([\s]{15})$|(?#RO Enviado Banco Cielo 03)^1([\d]{10})([\d]{7})([\d\s]{2})([a,\/,\s]{1})([\d\s]{2})(01)([\d]{6})([\d]{6})([\d]{6})([\D\d]{14})([\D\d]{14})([\D\d]{14})([\D\d]{14})([\d]{4})([\d]{5})([\d\s]{14})(02)([\d]{6})([\d]{2})([\d]{6})([\sRA]{1})([\d]{6})([\s\d]{2})([\d]{13})([\sCA]{1})([\d\S]{9})([\D\d]{14})([\d]{3})([\d]{22})([\d]{4})([\d]{5})([\d]{4})([\d\w\s]{2})([\w\s]{8})([\d]{3})([\s]{15})$|(?#RO A CONFIRMAR Cielo 03)^1([\d]{10})([\d]{7})([\d\s]{2})([a,\/,\s]{1})([\d\s]{2})(01)([\d]{6})([\d]{6})([\d]{6})([\D\d]{14})([\D\d]{14})([\D\d]{14})([\D\d]{14})([\d]{4})([\d]{5})([\d\s]{14})(03)([\d]{6})([\d]{2})([\d]{6})([\sRA]{1})([\d]{6})([\s\d]{2})([\d]{13})([\sCA]{1})([\d\S]{9})([\D\d]{14})([\d]{3})([\d]{22})([\d]{4})([\d]{5})([\d]{4})([\d\w\s]{2})([\w\s]{8})([\d]{3})([\s]{15})$|(?#Trailer Cielo 03)^9\d{11}.*$/m';
$str = '010072994502016122720161227201612270006712CIELO03PEC2354 001
110072994505161226 01161226170125000000+0000000004525-0000000000226+0000000000000+0000000004299023700974000002239P 0000000146000000 161226 0000000000000 000000000+0000000000000007163610370009502000000005000000000000242183323046
210072994505161226506700******601300020161226+00000000045250000 852956 26011900000000000001600000000000000000000000000000000000000142183323 18285816361037000950200000000001000
110072994505161226 01161226161227000000+0000000002000-0000000000036+0000000000000+0000000001964010400461000030090036750000000171000000 161226 0000000000000 000000000+00000000000000071636160900195540000000018200000000001WR023012071
210072994505161226627780******473200020161226+00000000020000000 721689 777266000000000000016000000000000000000000000000000000000001WR023012 18223616361609001955400000000001000
110072994505161226 01161226161227000000+0000000013218-0000000000240+0000000000000+0000000012978010400461000030090036750000000571000000 161226 0000000000000 000000000+0000000000000007163615060072658000000001820000000000242183323071
210072994505161226627780******573300020161226+00000000021700000 114576 26000400000000000001600000000000000000000000000000000000000142183323 08263816361506007265800000000001000
210072994505161226627780******074400020161226+00000000016520000 203138 26002100000000000001600000000000000000000000000000000000000142183323 09552916361506007265800000000002000
210072994505161226627780******016500020161226+00000000034370000 475524 26003500000000000001600000000000000000000000000000000000000142183323 11051216361506007265800000000003000
210072994505161226627780******978100020161226+00000000024240000 494289 26003600000000000001600000000000000000000000000000000000000142183323 11060716361506007265800000000004000
210072994505161226627780******521100020161226+00000000035350000 242001 26004900000000000001600000000000000000000000000000000000000142183323 11411916361506007265800000000005000
110072994505161226 01161226161227000000+0000000001515-0000000000028+0000000000000+0000000001487010400461000030090036750000000171000000 161226 0000000000000 000000000+0000000000000007163615070073805000000001820000000000242183323071
210072994505161226506731******910600020161226+00000000015150000 383179 26006200000000000001600000000000000000000000000000000000000142183323 14325916361507007380500000000001000
110072994505161226 01161226161227000000+0000000023435-0000000000426+0000000000000+0000000023009010400461000030090036750000000971000000 161226 0000000000000 000000000+0000000000000007163615080063547000000001820000000000242183323071
210072994505161226627780******713600020161226+00000000019840000 529099 26007300000000000001600000000000000000000000000000000000000142183323 15302716361508006354700000000001000
210072994505161226627780******259900020161226+00000000012900000 761140 26008900000000000001600000000000000000000000000000000000000142183323 17281616361508006354700000000002000
210072994505161226627780******573300020161226+00000000036000000 170156 26009700000000000001600000000000000000000000000000000000000142183323 17502116361508006354700000000003000
210072994505161226506731******320100020161226+00000000044090000 385284 26010400000000000001600000000000000000000000000000000000000142183323 18062416361508006354700000000004000
210072994505161226627780******038400020161226+00000000007890000 469596 26010500000000000001600000000000000000000000000000000000000142183323 18072816361508006354700000000005000
210072994505161226627780******473200020161226+00000000016410000 710137 26011300000000000001600000000000000000000000000000000000000142183323 18215316361508006354700000000006000
210072994505161226627780******970100020161226+00000000028110000 722260 26011400000000000001600000000000000000000000000000000000000142183323 18223916361508006354700000000007000
210072994505161226627780******374300020161226+00000000033050000 103822 26012700000000000001600000000000000000000000000000000000000142183323 18471816361508006354700000000008000
210072994505161226627780******035100020161226+00000000036060000 206415 26013200000000000001600000000000000000000000000000000000000142183323 18541516361508006354700000000009000
110072994505161226 01161226161227000000+0000000019307-0000000000350+0000000000000+0000000018957010400461000030090036750000000671000000 161226 0000000000000 000000000+0000000000000007163615090044288000000001820000000000242183323071
210072994505161226627780******938900020161226+00000000038580000 241875 26013300000000000001600000000000000000000000000000000000000142183323 18564416361509004428800000000001000
210072994505161226627780******276500020161226+00000000036360000 404956 26014200000000000001600000000000000000000000000000000000000142183323 19083416361509004428800000000002000
210072994505161226627780******053300020161226+00000000052870000 562554 26015000000000000001600000000000000000000000000000000000000142183323 19202816361509004428800000000003000
210072994505161226627780******400200020161226+00000000018340000 761322 26016100000000000001600000000000000000000000000000000000000142183323 19363216361509004428800000000004000
210072994505161226509091******810000020161226+00000000041850000 386308 26016900000000000001600000000000000000000000000000000000000142183323 19500816361509004428800000000005000
210072994505161226506727******110300020161226+00000000005070000 386367 26017500000000000001600000000000000000000000000000000000000142183323 19560716361509004428800000000006000
900000000029
';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($matches);
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php