I am trying to split a text file into pieces based on a specific delimiter.
A snippet of the text file
1_1_ABA-BUL
Sat Tjedan(i) Datum Učiona Predavač(i) Kolegij Način Grupa
Ponedjeljak
08:00-10:00 1 - 17 5.10 - 25.1 DV 12 ŠTAMPALIJA ALKA POSLOVNI NJEMAČKI P 1_1_ABA-BUL, 1_2_BULJ-GAB, 1_3_GAC-JUK,
JEZIK I 1_4_JUL-LOR, 1_5_LOS-MOR
10:00-12:00 1 - 17 5.10 - 25.1 SPORTSKA HERCEG ROMINA TJELESNA I S 1_1_2_BES-BUL
ZDRAVSTVENA
KULTURA I
12:00-14:00 1 - 17 5.10 - 25.1 DV 26 VARGA MLADEN INFORMATIKA P 1_1_ABA-BUL
Utorak
08:00-10:00 1 - 17 6.10 - 26.1 DV 12 ŠTAMPALIJA ALKA POSLOVNI NJEMAČKI S 1_1_ABA-BUL, 1_2_BULJ-GAB, 1_3_GAC-JUK,
JEZIK I 1_4_JUL-LOR, 1_5_LOS-MOR
08:00-10:00 1 - 17 6.10 - 26.1 DV 20 SLADOLJEV AGEJEV POSLOVNI ENGLESKI P 1_1_ABA-BUL
TAMARA JEZIK I
12:00-14:00 1 - 17 6.10 - 26.1 DV 40 ZOROJA JOVANA INFORMATIKA S 1_1_1_ABA-BER
12:00-14:00 1 - 17 6.10 - 26.1 DV 18 SLADOLJEV AGEJEV POSLOVNI ENGLESKI S 1_1_2_BES-BUL
TAMARA JEZIK I
Srijeda
08:00-11:00 1 - 17 7.10 - 27.1 DV 01 PULJIĆ KRUNOSLAV MATEMATIKA P 1_1_ABA-BUL
11:00-14:00 1 - 17 7.10 - 27.1 DV 01 KRPAN MIRA OSNOVE EKONOMIJE P 1_1_ABA-BUL
14:00-16:00 1 - 17 7.10 - 27.1 DV 11 SLADOLJEV AGEJEV POSLOVNI ENGLESKI S 1_1_1_ABA-BER
TAMARA JEZIK I
Četvrtak
11:00-14:00 1 - 17 8.10 - 28.1 DV 04 SLIŠKOVIĆ MARINA MATEMATIKA S 1_1_1_ABA-BER
Petak
09:00-12:00 1 - 17 9.10 - 29.1 DV 20 KRPAN MIRA OSNOVE EKONOMIJE S 1_1_2_BES-BUL
10:00-12:00 1 - 17 9.10 - 29.1 SPORTSKA HERCEG ROMINA TJELESNA I S 1_1_1_ABA-BER
ZDRAVSTVENA
KULTURA I
12:00-15:00 1 - 17 9.10 - 29.1 DV 09 KRPAN MIRA OSNOVE EKONOMIJE S 1_1_1_ABA-BER
13:00-16:00 1 - 17 9.10 - 29.1 DV 01 SLIŠKOVIĆ MARINA MATEMATIKA S 1_1_2_BES-BUL
16:00-18:00 1 - 17 9.10 - 29.1 DV 40 AVDIĆ AMMAR, INFORMATIKA S 1_1_2_BES-BUL
VANJSKI INF
1_2_BULJ-GAB
Sat Tjedan(i) Datum Učiona Predavač(i) Kolegij Način Grupa
Ponedjeljak
08:00-10:00 1 - 17 5.10 - 25.1 DV 12 ŠTAMPALIJA ALKA POSLOVNI NJEMAČKI P 1_1_ABA-BUL, 1_2_BULJ-GAB, 1_3_GAC-JUK,
JEZIK I 1_4_JUL-LOR, 1_5_LOS-MOR
10:00-13:00 1 - 17 5.10 - 25.1 DV 16 ŠEGO BOŠKO MATEMATIKA P 1_2_BULJ-GAB
14:00-16:00 1 - 17 5.10 - 25.1 DV 17 LEKAJ LUBINA BORKA POSLOVNI ENGLESKI P 1_2_BULJ-GAB
JEZIK I
Utorak
08:00-10:00 1 - 17 6.10 - 26.1 DV 12 ŠTAMPALIJA ALKA POSLOVNI NJEMAČKI S 1_1_ABA-BUL, 1_2_BULJ-GAB, 1_3_GAC-JUK,
JEZIK I 1_4_JUL-LOR, 1_5_LOS-MOR
10:00-12:00 1 - 17 6.10 - 26.1 DV 01 PEJIĆ BACH MIRJANA INFORMATIKA P 1_2_BULJ-GAB
15:00-18:00 1 - 17 6.10 - 26.1 DV 11 HERCEG TOMISLAV OSNOVE EKONOMIJE P 1_2_BULJ-GAB
Srijeda
08:00-10:00 1 - 17 7.10 - 27.1 DV 42 MILANOVIĆ GLAVAN INFORMATIKA S 1_2_1_BULJ-DAJ
LJUBICA
10:00-12:00 1 - 17 7.10 - 27.1 DV 42 MILANOVIĆ GLAVAN INFORMATIKA S 1_2_2_DAK-GAB
LJUBICA
10:00-12:00 1 - 17 7.10 - 27.1 SPORTSKA HERCEG ROMINA TJELESNA I S 1_2_1_BULJ-DAJ
ZDRAVSTVENA
KULTURA I
15:00-18:00 1 - 17 7.10 - 27.1 DV 23 HERCEG TOMISLAV OSNOVE EKONOMIJE S 1_2_1_BULJ-DAJ
18:00-21:00 1 - 17 7.10 - 27.1 DV 23 HERCEG TOMISLAV OSNOVE EKONOMIJE S 1_2_2_DAK-GAB
Četvrtak
Petak
10:00-12:00 1 - 17 9.10 - 29.1 SPORTSKA HERCEG ROMINA TJELESNA I S 1_2_2_DAK-GAB
ZDRAVSTVENA
KULTURA I
11:00-14:00 1 - 17 9.10 - 29.1 DV 19 ŠKRINJARIĆ TIHANA MATEMATIKA S 1_2_1_BULJ-DAJ
12:00-14:00 1 - 17 9.10 - 29.1 DV 16 LEKAJ LUBINA BORKA POSLOVNI ENGLESKI S 1_2_2_DAK-GAB
JEZIK I
14:00-17:00 1 - 17 9.10 - 29.1 DV 02 ŠKRINJARIĆ TIHANA MATEMATIKA S 1_2_2_DAK-GAB
14:00-16:00 1 - 17 9.10 - 29.1 DV 10 LEKAJ LUBINA BORKA POSLOVNI ENGLESKI S 1_2_1_BULJ-DAJ
JEZIK I
I am splitting the string at the 1_1_ABA-BUL line and the other lines of the same format (above the "Sat" string).
This is my preg_split line
$grupe = preg_split("/((.*?)\nSat)/", $source, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE);
The following preg_split line doesn't keep the delimiter (1_1_ABA-BUL etc.). If I change it to
$grupe = preg_split("/((.*?)\nSat)/", $source, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE);
The resulting arrays are not correct (I get a corrupt result).
What am I doing wrong here?
The first way you use preg_split() seems to work but in fact it doesn't.
It's third argument ($limit) is the number of pieces to return. It happened that the texts you used were not long enough and the number of pieces was smaller than or equal to 3 (the value of PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE).
This is how you can make it work:
$grupe = preg_split('/(.*?)\n(?=Sat)/', $source, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE);
This is a (truncated) listing of print_r($grupe):
Array
(
[0] => 1_1_ABA-BUL
[1] => Sat Tjedan(i) Datum Učiona Predavač(i) Kolegij Način Grupa
Ponedjeljak
08:00-10:00 1 - 17 5.10 - 25.1 DV 12 ŠTAMPALIJA ALKA POSLOVNI NJEMAČKI P 1_1_ABA-BUL, 1_2_BULJ-GAB, 1_3_GAC-JUK,
JEZIK I 1_4_JUL-LOR, 1_5_LOS-MOR
...
16:00-18:00 1 - 17 9.10 - 29.1 DV 40 AVDIĆ AMMAR, INFORMATIKA S 1_1_2_BES-BUL
VANJSKI INF
[2] => 1_2_BULJ-GAB
[3] => Sat Tjedan(i) Datum Učiona Predavač(i) Kolegij Način Grupa
Ponedjeljak
08:00-10:00 1 - 17 5.10 - 25.1 DV 12 ŠTAMPALIJA ALKA POSLOVNI NJEMAČKI P 1_1_ABA-BUL, 1_2_BULJ-GAB, 1_3_GAC-JUK,
...
14:00-16:00 1 - 17 9.10 - 29.1 DV 10 LEKAJ LUBINA BORKA POSLOVNI ENGLESKI S 1_2_1_BULJ-DAJ
JEZIK I
)
How it works:
The important change of the regular expression is the assertion (?=Sat). It says the previous part of the regex ((.*?)\n) matches a part of the string only if that part of the string is followed by Sat. The assertion only checks the next characters from the input string but doesn't consume them. The Sat part does not become a part of the delimiter.
The rest is unchanged. The flag PREG_SPLIT_DELIM_CAPTURE makes preg_split() return the captured parts of the regex delimiter as individual pieces of the output. Find them above at offsets 0 and 2. The Sat substring, being just an assertion is not part of the delimiter but it is returned in the next piece (where it belongs).