I notice that (Mandrake) Linux and Windows do not seem to operate alike in terms of installing third party software.
Windows, on one hand, creates icons and adds items to the Start Menu, with the help of the InstallShield--or equivalent, of course, but Linux, on the other hand, seems to care... (3 Replies)
I have installed Red Hat Linux 9.0 recently on my computer.
Im wondering if there are any good sites for downloading linux programs besides the site of Red Hat.
Thank you in advance!:D (4 Replies)
I need help to create batch file .
I want to run some programs in sequence in batch mode . I have one file which contains the name of program and command
The test.bat file contain this data
stsrun -v devel area1.exp
stsrun -v devel prime1.exp
stsrun -v devel treat.exp
Please help... (1 Reply)
:cool:
I need to execute a shell script to do the following:
cat a file
run two back ground processes using the first two values from the file
wait till those background processes finish
run two more background processes using the next two values from the file
wait till those background... (1 Reply)
Hi,
I want to make changes to inittab file and reread it using "telinit q" to make changes effective immediately. Is it safe to do that while important apps are running ?
thanks
Vilius (1 Reply)
Are the programs written on schedulers ,thread library , process management, memory management, et al called systems programs ? How are they different from the programs that implement functions like open() , printf() , scanf() , read() .. they have a prefix sys_open, sys_close, sys_read etc , right... (1 Reply)
Hello.
The last days I extended an open-source C++ library by some faster functions. This library provides a lot of short test programs which guarantee that the library works exactly.
The compilation of each test works in a Makefile automatically.
What I need is a shell script which... (5 Replies)
Hey guys,
Suppose i run passwd via bash shell. It is a suid program, which temporarily runs as root(owner) and modifies the user entries.
However, when i write a C file and give 4755 permission and root ownership to the 'a.out' file , it doesn't run as root in bash shell. I verified this by... (2 Replies)
Discussion started by: syncmaster
2 Replies
LEARN ABOUT PHP
pdo.exec
PDO.EXEC(3) 1 PDO.EXEC(3)PDO ::exec - Execute an SQL statement and return the number of affected rows
SYNOPSIS
public int PDO::exec (string $statement)
DESCRIPTION PDO.exec(3) executes an SQL statement in a single function call, returning the number of rows affected by the statement.
PDO.exec(3) does not return results from a SELECT statement. For a SELECT statement that you only need to issue once during your program,
consider issuing PDO.query(3). For a statement that you need to issue multiple times, prepare a PDOStatement object with PDO.prepare(3) and
issue the statement with PDOStatement.execute(3).
PARAMETERS
o $statement
- The SQL statement to prepare and execute. Data inside the query should be properly escaped.
RETURN VALUES PDO.exec(3) returns the number of rows that were modified or deleted by the SQL statement you issued. If no rows were affected, PDO.exec(3)
returns 0.
Warning
This function may return Boolean FALSE, but may also return a non-Boolean value which evaluates to FALSE. Please read the section on
Booleans for more information. Use the === operator for testing the return value of this function.
The following example incorrectly relies on the return value of PDO.exec(3), wherein a statement that affected 0 rows results in a call to
die(3):
<?php
$db->exec() or die(print_r($db->errorInfo(), true));
?>
EXAMPLES
Example #1
Issuing a DELETE statement
Count the number of rows deleted by a DELETE statement with no WHERE clause.
<?php
$dbh = new PDO('odbc:sample', 'db2inst1', 'ibmdb2');
/* Delete all rows from the FRUIT table */
$count = $dbh->exec("DELETE FROM fruit WHERE colour = 'red'");
/* Return number of rows that were deleted */
print("Deleted $count rows.
");
?>
The above example will output:
Deleted 1 rows.
SEE ALSO PDO.prepare(3), PDO.query(3), PDOStatement.execute(3).
PHP Documentation Group PDO.EXEC(3)