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07-23-2008
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store key value
Hi All,
I have a string like echo $var D_PROC=20080723 I_REPROC=N C_TYPE_FILE=INBOUND Now I want it be stored in an associative array so that when we echo $arr[D_PROC] it should be 20080723 
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07-23-2008
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Are you saying D_PROC is the array element?
Normally, an array would have elements that are numbers. For example:
client[1]=Joe client[2]=Kerry So, you are trying to get to: arr[D_PROC]=20080723 but, D_PROC is not representative of anything (it isn't a variable itself) Please confirm.
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07-23-2008
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In PHP? No problem.
In Perl? Yep, we call those Hashes. In very nearly any other language? Sure, with varying levels of straightforwardness. In Bash? Not without some seriously-absurd buffoonery. It's almost always better to find another way to do it. Is this absolutely what you need, and no other approach will work? Something like: Code:
key="some_key" array[$(i=0; while [ x${arrayname[$i]} != x ]; do if [ x${arrayname[$i]} == x$key ]; then break; fi; export i=$(($i+1)); done; arrayname[$i]=$key; echo $i)]="value"
Code:
key="some_key"; array[$(i=0; while [ x${arrayname[$i]} != x ]; do if [ x${arrayname[$i]} == x$key ]; then break; fi; export i=$(($i+1)); done; echo $i)]="value"
if [ x${arrayname[$i]} == x ]; then arrayname[$i]=$key; fi
Code:
i=0; while [ x${arrayname[$i]} != x ]; do echo '$array['${arrayname[$i]}']="'${array[$i]}'"'; i=$(($i+1)); done
Code:
key="some_key"; i=0; while [ x${arrayname[$i]} != x ]; do if [ x${arrayname[$i]} == x$key ]; then echo ${array[$i]}; fi; i=$(($i+1)); done
Quite likely to break, full of holes, contains at least one bug, and generally inadvisable to use. Enjoy! Last edited by BMDan; 07-23-2008 at 10:57 AM.
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07-24-2008
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use perl:
Code:
$str="D_PROC=20080723 I_REPROC=N C_TYPE_FILE=INBOUND";
$str=~s/=| /,/g;
@str=split(",",$str);
for($i=0;$i<=($#str+1)/2-1;$i++){
$hash{$str[$i*2]}=$str[$i*2+1];
}
print $hash{'I_REPROC'},"\n";
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07-25-2008
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How about if one of the value is null ie first_key=1 second_key= third_key=3.
Here the second_key is null.Is the perl script here going to read the values of second_key as " " or the string "third_key"
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