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Full Discussion: Bit shift operator
Top Forums Programming Bit shift operator Post 302087618 by naan on Monday 4th of September 2006 02:36:19 AM
Old 09-04-2006
Bit shift operator

Can someone pls tell me how is the operation different in the following two code snippets?


main()
{
int temp=20742;

short temp1;
temp1 = temp << 8;
printf("The vaue is %d\n",temp1>>8);}

result:6

main()
{
int temp=20742;

short temp1;
temp1 =(temp << 8)>>8;
printf("The vaue is %d\n",temp1);}

result: 20742

If I want to do the operation that I have done in the first code snippet in a single line without using any temp variables, how do I do it?

Thanks,
Anitha
 

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MAXDB_REAL_ESCAPE_STRING(3)						 1					       MAXDB_REAL_ESCAPE_STRING(3)

maxdb_real_escape_string - Escapes special characters in a string for use in an SQL statement, taking into account the current charset of the con-
nection

       Procedural style

SYNOPSIS
string maxdb_real_escape_string (resource $link, string $escapestr) DESCRIPTION
Object oriented style string maxdb::real_escape_string (string $escapestr) This function is used to create a legal SQL string that you can use in an SQL statement. The string escapestr is encoded to an escaped SQL string, taking into account the current character set of the connection. Characters encoded are ', ". RETURN VALUES
Returns an escaped string. EXAMPLES
Example #1 Object oriented style <?php $maxdb = new maxdb("localhost", "MONA", "RED", "DEMODB"); /* check connection */ if (maxdb_connect_errno()) { printf("Connect failed: %s ", maxdb_connect_error()); exit(); } $maxdb->query("CREATE TABLE temp.mycity LIKE hotel.city"); $city = "'s Hertogenbosch"; /* this query will fail, cause we didn't escape $city */ if (!$maxdb->query("INSERT into temp.mycity VALUES ('11111','$city','NY')")) { printf("Error: %s ", $maxdb->sqlstate); } $city = $maxdb->real_escape_string($city); /* this query with escaped $city will work */ if ($maxdb->query("INSERT into temp.mycity VALUES ('22222','$city','NY')")) { printf("%d Row inserted. ", $maxdb->affected_rows); } $maxdb->close(); ?> Example #2 Procedural style <?php $link = maxdb_connect("localhost", "MONA", "RED", "DEMODB"); /* check connection */ if (maxdb_connect_errno()) { printf("Connect failed: %s ", maxdb_connect_error()); exit(); } maxdb_query($link, "CREATE TABLE temp.mycity LIKE hotel.city"); $city = "'s Hertogenbosch"; /* this query will fail, cause we didn't escape $city */ if (!maxdb_query($link, "INSERT into temp.mycity VALUES ('11111','$city','NY')")) { printf("Error: %s ", maxdb_sqlstate($link)); } $city = maxdb_real_escape_string($link, $city); /* this query with escaped $city will work */ if (maxdb_query($link, "INSERT into temp.mycity VALUES ('22222','$city','NY')")) { printf("%d Row inserted. ", maxdb_affected_rows($link)); } maxdb_close($link); ?> The above example will output something similar to: Warning: maxdb_query(): -5016 POS(43) Missing delimiter: ) <...> Error: 42000 1 Row inserted. SEE ALSO
maxdb_character_set_name(3). PHP Documentation Group MAXDB_REAL_ESCAPE_STRING(3)
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