03-17-2011
- In glob, ? matches any single character, and in regex . does the same.
- In glob, * matches any 0-max characters, and in reges .* doees that.
- In glob you can match any character in a list, with ranges, like characters legal for C variable names: [a-zA-Z0-9_] Regex does the same, the same way but can also do negative lists, like not a number: [^0-9].
- In regex you have * for any count, but not in glob.
- Extended regex, like egrep or grep -E, has + for count 0 or one, \{##\} for specific count, and \{##-##\} for ranges of count.
- Extended regex has parentheses and OR operator | for lists of alternatives, and glob in case does the same: From (Tom|Dick|Harry).
- Extended regex has morphed in ways that make old scripts break, like for beginning of word \< disappeared and \b came in its place for the position at the edge of a word. One friend speculates that the PERL lovers had their way over traditional UNIX thought.
- Apparently bash has extended globbing available, too. As I recall, the context can be switched between regex and glob with different wrapping operators in if/while tests.
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LEARN ABOUT PHP
sqlsrv_free_stmt
SQLSRV_FREE_STMT(3) SQLSRV_FREE_STMT(3)
sqlsrv_free_stmt - Frees all resources for the specified statement
SYNOPSIS
bool sqlsrv_free_stmt (resource $stmt)
DESCRIPTION
Frees all resources for the specified statement. The statement cannot be used after sqlsrv_free_stmt(3) has been called on it. If sql-
srv_free_stmt(3) is called on an in-progress statement that alters server state, statement execution is terminated and the statement is
rolled back.
PARAMETERS
o $stmt
- The statment for which resources are freed. Note that NULL is a valid parameter value. This allows the function to be called
multiple times in a script.
RETURN VALUES
Returns TRUE on success or FALSE on failure.
EXAMPLES
Example #1
sqlsrv_free_stmt(3) example
<?php
$serverName = "serverNamesqlexpress";
$connectionInfo = array( "Database"=>"dbName", "UID"=>"username", "PWD"=>"password");
$conn = sqlsrv_connect( $serverName, $connectionInfo);
if( $conn === false ) {
die( print_r( sqlsrv_errors(), true));
}
$stmt = sqlsrv_query( $conn, "SELECT * FROM Table_1");
if( $stmt === false ) {
die( print_r( sqlsrv_errors(), true));
}
/*-------------------------------
Process query results here.
-------------------------------*/
/* Free the statement resources. */
sqlsrv_free_stmt( $stmt);
?>
NOTES
The main difference between sqlsrv_free_stmt(3) and sqlsrv_cancel(3) is that a statement resource cancelled with sqlsrv_cancel(3) can be
re-executed if it was created with sqlsrv_prepare(3). A statement resource cancelled with sqlsrv_free_statement(3) cannot be re-executed.
SEE ALSO
sqlsrv_cancel(3).
PHP Documentation Group SQLSRV_FREE_STMT(3)