Your post is not clear to understand.
According to my understanding, your data seems to be like this

jsdlkjalsd same_text = 1, jhhj, jhjk = 256, iuqoi, uereoiu, sjksdh,  s
+ame_text = 2, lkkj, lksj = 6287 uwie same_text = 2, sdaj, jsdgd, sksd
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you want a hash output as

For the key "1" the value should be "jhhj, jhjk"
For the key "2" the value should be "lkkj, lksj , sdaj, jsdgd"
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If I am correct then you can use the below perl code.

use Data::Dumper;

open(FH,"x.txt") or die("Can't open the file: $!");
$/=EOF;
my $var = <FH>;

my %hash=();
while ($var =~ /(same_text\s=\s\d),((\s\S+){1,2})/gi)
{
      my ($junk,$ky)=split(/=/,$1);
      push(@{$hash{$ky}},$2);
}
map { print "$_ -- @{$hash{$_}} \n "; } keys %hash;
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