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Top Forums Shell Programming and Scripting Why I get bad bad substitution when using eval? Post 302548675 by 915086731 on Friday 19th of August 2011 03:19:44 AM
Old 08-19-2011
Code:
[river@localhost ate]$ eval echo  \${map$i[1]}
0000
[river@localhost ate]$ a=`eval echo \\${map$i[2]}`
[river@localhost ate]$ echo $a                                       ??not "0000"??
0

The following result is right!
Code:
[river@localhost ate]$ a=$(eval echo \${map$i[1]})
[river@localhost ate]$ echo $a
0000
[river@localhost ate]$


Thanks!
I feel very puzzled, why I must need add '\' more, or add $(). Can you tell me ?
 

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CUBRID_CLOSE_PREPARE(3) 						 1						   CUBRID_CLOSE_PREPARE(3)

cubrid_close_prepare - Close the request handle

SYNOPSIS
bool cubrid_close_prepare (resource $req_identifier) DESCRIPTION
The cubrid_close_prepare(3) function closes the request handle given by the $req_identifier argument, and releases the memory region related to the handle. It is an alias of cubrid_close_request(3). PARAMETERS
o $req_identifier -Request identifier. RETURN VALUES
Return TRUE on success. EXAMPLES
Example #1 cubrid_close_prepare(3) example <?php $con = cubrid_connect ("localhost", 33000, "demodb", "dba", ""); if ($con) { echo "connected successfully"; $req = cubrid_execute ( $con, "select * from members", CUBRID_INCLUDE_OID | CUBRID_ASYNC); if ($req) { while ( list ($id, $name) = cubrid_fetch ($req) ){ echo $id; echo $name; } cubrid_close_prepare($req); // or you can use cubrid_close_request($req) } cubrid_disconnect($con); } ?> SEE ALSO
cubrid_close_request(3). PHP Documentation Group CUBRID_CLOSE_PREPARE(3)
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