odbc_execute

(PHP 4, PHP 5, PHP 7)

odbc_execute — Execute a prepared statement

说明

bool odbc_execute ( resource $result_id [, array $parameters_array ] )

Executes a statement prepared with odbc_prepare().

参数

result_id

The result id resource, from odbc_prepare().

parameters_array

Parameters in parameter_array will be substituted for placeholders in the prepared statement in order. Elements of this array will be converted to strings by calling this function.

Any parameters in parameter_array which start and end with single quotes will be taken as the name of a file to read and send to the database server as the data for the appropriate placeholder.

If you wish to store a string which actually begins and ends with single quotes, you must add a space or other non-single-quote character to the beginning or end of the parameter, which will prevent the parameter from being taken as a file name. If this is not an option, then you must use another mechanism to store the string, such as executing the query directly with odbc_exec()).

返回值

成功时返回 TRUE， 或者在失败时返回 FALSE。

范例

Example #1 odbc_execute() and odbc_prepare() example

In the following code, $success will only be TRUE if all three parameters to myproc are IN parameters:

<?php
$a = 1;
$b = 2;
$c = 3;
$stmt    = odbc_prepare($conn, 'CALL myproc(?,?,?)');
$success = odbc_execute($stmt, array($a, $b, $c));
?>

If you need to call a stored procedure using INOUT or OUT parameters, the recommended workaround is to use a native extension for your database (for example, mssql for MS SQL Server, or oci8 for Oracle).

更新日志

版本 说明
4.2.0 File reading is now subject to 安全模式 and open-basedir restrictions in parameters_array.

参见

User Contributed Notes

vince at dinapoliwest dot com 14-Jun-2016 05:48
I've been using odbc functions for quite a while and I was floored when I finally read the details about the how the parameters are handled when they start and end with single quotes! I assumed that the main reason for odbc_execute vs. odbc_exec was to prevent sql injection but apparently this added feature actually opens another security hole, perhaps worse. This was my fix:

<?php

function odbc_execute_clean_parameters($result_id, $parameters_array){
  for($i = 0; $i < count($parameters_array); ++$i){
    if( substr($parameters_array[$i], -1) == "'" && substr($parameters_array[$i], 0 ,1) == "'" ){
      $parameters_array[$i].= " ";
    }
  }
  return odbc_execute($result_id, $parameters_array);
}

// then call
$stmt = odbc_prepare($conn, " insert into mytable (col1, col2) values (?, ?) ");
$r = odbc_execute_clean_parameters($stmt, array( $val1, $val2 ) );

?>
Marco Napetti 25-Oct-2012 07:18
To use prepared with select queries, the right way is:
<?PHP

$rConnection = odbc_connect('AS400', 'QSECOFR', 'QSECOFR');
if($rConnection === false) {
    throw new ErrorException(odbc_errormsg());
}

$rResult = odbc_prepare($rConnection, 'SELECT * FROM KMNSH00F WHERE SHTMST > ?');
if($rResult === false) {
    throw new ErrorException(odbc_errormsg());
}

if(odbc_execute($rResult, array('0001-01-01 00:00:00.000000')) === false) {
    throw new ErrorException(odbc_errormsg());
}

odbc_result_all($rResult);

odbc_free_result($rResult);

odbc_close($rConnection);

?>
alvaro at demogracia dot com 20-Dec-2011 02:16
When odbc_execute() fails it returns FALSE and triggers a warning but it will not necessarily feed odbc_error() and odbc_errormsg().
anonymous 29-Apr-2009 08:32
if you can't use php_mssql module in your environment (suse linux, apache2, php5, FreeTDS, unixODBC) an alternative is to use sql server functions instead of procedures. here is my sample code.

<?php
  $connect        = odbc_connect($myDB, $myUser, $myPass);

  $query = "SELECT dbo.<function>(<column>,<text>) alias";

  // perform the query
  $result = odbc_exec($connect, $query);

  while(odbc_fetch_row($result)) {
    $Var1    = odbc_result($result, <column alias>);
    //echo "Var1: " . $Var1 . "<br>";

        // add additional logic

  }
?>

Once I figured this out, my app worked perfectly.
jeroen at pyromanic dot nl 05-Jun-2008 10:05
If you want to use stored procedures with MSSQL over ODBC, please read

http://www.sitepoint.com/article/php-microsoft-sql-server/2

It can you save lots of time ;)
traynor at uni hyphen hannover dot de 08-Nov-2007 03:09
Obdc_prepare and obdc_execute can only be used as an alternative to odbc_exec in limited circumstances:

$con = obdc_connect ($dsn, $user, $pass);
$sql = "select * from TABLE";

$result = obdc_exec ($con, $sql); //this line can be replaced as blow
//then to see results:

odbc_result_all ($result);
odbc_free_result ($result);
odbc_close ($con);

gives the same result with the middle line as:

$result = odbc_prepare ($con, $sql);
odbc_execute ($result);

as long as $sql contains a well formed and complete query.

There is no point in trying to convert this into a parameter query with question marks as placeholders, since code like this will result only in error messages:

$sql = "select * from TABLE where needle = ?";
$result = odbc_prepare ($con, $sql);
for ($i = 0; $i < 4; $i++)
{
  odbc_execute ($result, array ($i));
  // and whatever you want to do with the result
  // but all you get is "parameter expected" or "count does not match"
}

The lack of documentation for such functions should have been an alarm signal.
a dot brock at hhv-rheinklang dot de 24-Aug-2006 01:38
I have a solution for the problem with the strings beeing interpreted as filename because of the single quotes:

Just add a blank to the end of the string:

<?php
function odbc_escape_params ($params) {
 if (!is_array($params) or empty($params)) {
  return array();
 }
 foreach ($params as $key=>$val) {
  if (strlen($val) > 1 and $val{0} == "'" and $val{strlen($val)-1} == "'") {
   $params[$key] .= ' ';
  }
 }
 return $params;
}
?>
mjs at beebo dot org 27-Mar-2006 10:57
Don't miss the part where it says that if your string starts and ends with a single quote, the string is interpreted as a filename!

This means that you can't do:

$sth = odbc_prepare($dbh, "INSERT INTO people(name) VALUES(?)");
$res = odbc_execute($sth, array($name));

without checking the value of $name--if $name is, say, '\\'c:\\passwords.txt\\'' the contents of c:\\passwords.txt get inserted into your database as a "name".

Also, despite what the documentation suggests, there (incredibly) doesn't appear to be any way to escape your single quotes (via experimentation, and from reading the source): if your string starts and ends with a single quote you cannot use odbc_execute to insert it into the database.
russell dot brown at removethis dot insignia dot com 09-Feb-2004 09:55
In reply to tcmleung at yahoo dot com (09-Nov-2001), I would add a caveat that I've found, which is that the odbc.defaultlrl/odbc_longreadlen() values may only apply to odbc->php conversion and not php->odbc (though this may be database-specific). Hence, if you want to post binary data the 4096 byte limit still stands. So you stand a better chance of being able to post binary data using the quoted filename upload procedure described above, rather than using the prepare... execute method with data held in a php variable.
svemir_AT_baltok.com 06-Sep-2002 07:45
In reply to cpoirier's note from 04-Mar-2001 03:30:

Currently, Access 2000 DOES support parametrized queries via ODBC. It still seems to have a problem with Memo and OLE fields, but "normal" types work just fine.
tcmleung at yahoo dot com 09-Nov-2001 10:22
odbc has a maximum buffer size, that means it only stores and retrieves a limited size of data to/from database each time. The maximum buffer size is 4096 and set in php.ini (odbc.defaultlrl). You can set it to higher value for larger data access.
sjericson at mindspring dot com 26-Aug-2001 07:43
I don't think odbc_prepare and odbc_execute support output parameters for stored procedures on MSSQL.  An example of output parameters for MSSQL is at  http://support.microsoft.com/support/kb/articles/q174/2/23.asp

Also, my MSSQL driver seems happy only when I use the following incantation:

...code removed...
$stmt=odbc_prepare($conn_id, "exec my_proc_name ?,?,?");
$parms=array("fred","password",5);
if (!odbc_execute($stmt, &$parms)) die("odbc_execute failed");
reaganpr at hotmail dot com 24-Jul-2001 01:50
When running the CGI version of 4.0.6 under windows, I came across this error when trying to call a stored procedure in SQL Server using odbc_execute w/ the parameter array set:

FATAL:  emalloc():  Unable to allocate 268675669 bytes

Scary error, huh? In my case it just meant that SQL Server couldn't find the stored procedure.  Totally my fault, but a rather nondescript error message.

p.
cpoirier at shelluser dot net 04-Mar-2001 11:30
A quick note in hopes that my pain will save someone else:  Microsoft Access ODBC drivers do not support parameterized queries.
edrenth at thematec dot nl 17-Oct-2000 03:17
When used with parameters and the statement fails, you cannot use different arguments anymore, the same arguments as with the failed statement will be used.
tony dot wood at revolutionltd dot com 28-May-1999 01:08
For a simple database insert to a database that has no password and $from and $to are predefined variables.

<?php
/* get connection */
$conn=odbc_connect("mydb","","");

/* run insert */
$stmt = odbc_prepare($conn, "INSERT INTO mytable (jor_from, jor_to) VALUES('$from', '$to');" );

/* check for errors */
if (!odbc_execute($stmt)) {
    /* error  */
    echo "Whoops";
}

/* close connection */
odbc_close($conn);
?>
wntrmute at tampabay dot rr dot com 16-Aug-1998 06:22
Solid Issue:
Solid defines CHAR, VARCHAR, LONG VARCHAR, BINARY, VARBINARY, and LONG VARBINARY to be a maximum of 2G in length.  However, when creating your tables for use with PHP one should choose LONG VARCHAR or LONG VARBINARY for these kinds of fields if you are planning on storing really large or lengthy data.  IE: Data exceeding 64k in length such as GIF/JPG, or really huge text areas.