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# maxdb_stmt_bind_param

(PECL)

maxdb_stmt_bind_param

(no version information, might be only in CVS)

stmt->bind_param -- Binds variables to a prepared statement as parameters

## Description

Procedural style:

bool maxdb_stmt_bind_param ( resource stmt, string types, mixed &var1 [, mixed &...] )

Object oriented style (method):

class stmt {
bool bind_param ( string types, mixed &var1 [, mixed &...] )
}

Procedural style (extended syntax):

bool maxdb_stmt_bind_param ( resource stmt, string types, array &var )

Object oriented style (method) (extended syntax):

class stmt {
bool bind_param ( string types, array &var )
}

maxdb_stmt_bind_param() is used to bind variables for the parameter markers in the SQL statement that was passed to maxdb_prepare(). The string types contains one or more characters which specify the types for the corresponding bind variables.

The extended syntax of maxdb_stmt_bind_param() allows to give the parameters as an array instead of a variable list of PHP variables to the function. If the array variable has not been used before calling maxdb_stmt_bind_param(), it has to be initialized as an emtpy array. See the examples how to use maxdb_stmt_bind_param() with extended syntax.

Variables for SELECT INTO SQL statements can also be bound using maxdb_stmt_bind_param(). Parameters for database procedures can be bound using maxdb_stmt_bind_param(). See the examples how to use maxdb_stmt_bind_param() in this cases.

If a variable bound as INTO variable to a SQL statement was used before, the content of this variable is overwritten by the data of the SELECT INTO statement. A reference to this variable will be invalid after a call to maxdb_stmt_bind_param().

For INOUT parameters of database procedures the content of the bound INOUT variable is overwritten by the output value of the database procedure. A reference to this variable will be invalid after a call to maxdb_stmt_bind_param().

Table 1. Type specification chars

Character | Description
--- | ---
i | corresponding variable has type integer
d | corresponding variable has type double
s | corresponding variable has type string
b | corresponding variable is a blob and will be send in packages

## Return values

Returns `TRUE` on success or `FALSE` on failure.

## See also

maxdb_stmt_bind_result(), maxdb_stmt_execute(), maxdb_stmt_fetch(), maxdb_prepare(), maxdb_stmt_send_long_data(), maxdb_stmt_errno(), maxdb_stmt_error()

## Example

Example 1. Object oriented style
`<?php $maxdb = new maxdb('localhost', 'MONA', 'RED', 'DEMODB'); /* check connection */ if (maxdb_connect_errno()) { printf("Connect failed: %s\n", maxdb_connect_error()); exit(); } $maxdb->query ("CREATE TABLE temp.mycity LIKE hotel.city"); $maxdb->query ("INSERT INTO temp.mycity SELECT * FROM hotel.city"); $stmt = $maxdb->prepare("INSERT INTO temp.mycity VALUES (?, ?, ?)"); $stmt->bind_param('sss', $zip, $name, $state); $zip = '11111'; $name = 'Georgetown'; $state = 'NY'; /* execute prepared statement */ $stmt->execute(); printf("%d Row inserted.\n", $stmt->affected_rows); /* close statement and connection */ $stmt->close(); /* Clean up table CountryLanguage */ $maxdb->query("DELETE FROM temp.mycity WHERE name='Georgetown'"); printf("%d Row deleted.\n", $maxdb->affected_rows); /* close connection */ $maxdb->close(); ?>`

Example 2. Procedural style
`<?php $link = maxdb_connect("localhost", "MONA", "RED", "DEMODB"); /* check connection */ if (!$link) { printf("Connect failed: %s\n", maxdb_connect_error()); exit(); } maxdb_query ($link, "CREATE TABLE temp.mycity LIKE hotel.city"); maxdb_query ($link, "INSERT INTO temp.mycity SELECT * FROM hotel.city"); $stmt = maxdb_prepare($link, "INSERT INTO temp.mycity VALUES (?, ?, ?)"); maxdb_stmt_bind_param($stmt, 'sss', $zip, $name, $state); $zip = '11111'; $name = 'Georgetown'; $state = 'NY'; /* execute prepared statement */ maxdb_stmt_execute($stmt); printf("%d Row inserted.\n", maxdb_stmt_affected_rows($stmt)); /* close statement and connection */ maxdb_stmt_close($stmt); /* Clean up table CountryLanguage */ maxdb_query($link, "DELETE FROM temp.mycity WHERE name='Georgetown'"); printf("%d Row deleted.\n", maxdb_affected_rows($link)); /* close connection */ maxdb_close($link); ?>`

The above examples would produce the following output:

    1 Row inserted.
    1 Row deleted.

Example 3. Procedural style (SELECT INTO)
`<?php $link = maxdb_connect("localhost", "MONA", "RED", "DEMODB"); /* check connection */ if (!$link) { printf("Connect failed: %s\n", maxdb_connect_error()); exit(); } /* Performing SQL query */ $stmt = maxdb_prepare ($link, "SELECT price INTO ? FROM hotel.room where hno = ? and type = ?"); if (!$stmt) { printf ("Prepare failed: %s\n", maxdb_error($link)); } $hno = "50"; $rtype = "suite"; maxdb_stmt_bind_param($stmt, 'dss', $price, $hno, $rtype); maxdb_stmt_execute($stmt); printf ("%f\n", $price); maxdb_stmt_close ($stmt); ?>`

The above examples would produce the following output:

    21.600000

Example 4. Procedural style (DB procedure)
`<?php $link = maxdb_connect("localhost", "MONA", "RED", "DEMODB"); /* check connection */ if (!$link) { printf("Connect failed: %s\n", maxdb_connect_error()); exit(); } maxdb_report (MAXDB_REPORT_OFF); maxdb_query($link,"DROP DBPROC test_proc"); maxdb_report (MAXDB_REPORT_ERROR); $query = "create dbproc test_proc (INOUT e_text char(72)) AS select * from SYSDBA.DUAL; fetch into :e_text;"; maxdb_query($link, $query); /* Performing SQL query */ $stmt = maxdb_prepare ($link, "CALL test_proc (?)"); if (!$stmt) { printf ("Prepare failed: %s\n", maxdb_error($link)); } maxdb_stmt_bind_param($stmt, 's', $result); maxdb_stmt_execute($stmt); printf ("%s\n", $result); maxdb_stmt_close ($stmt); ?>`

The above examples would produce the following output:

    a

Example 5. Object oriented style (extended syntax)
`<?php $maxdb = new maxdb('localhost', 'MONA', 'RED', 'DEMODB'); /* check connection */ if (maxdb_connect_errno()) { printf("Connect failed: %s\n", maxdb_connect_error()); exit(); } $maxdb->query ("CREATE TABLE temp.mycity LIKE hotel.city"); $maxdb->query ("INSERT INTO temp.mycity SELECT * FROM hotel.city"); $stmt = $maxdb->prepare("INSERT INTO temp.mycity VALUES (?, ?, ?)"); $arr = array(); $stmt->bind_param('iss', $arr); $arr[0] = 11111; $arr[1] = 'Georgetown'; $arr[2] = 'NY'; /* execute prepared statement */ $stmt->execute(); printf("%d Row inserted.\n", maxdb_stmt_affected_rows($stmt)); $arr[0] = 22222; $arr[1] = 'New Orleans'; $arr[2] = 'LA'; /* execute prepared statement */ $stmt->execute(); printf("%d Row inserted.\n", $stmt->affected_rows); /* close statement and connection */ $stmt->close(); $result = $maxdb->query("SELECT * from temp.mycity WHERE zip = '11111' OR zip = '22222'"); if ($result) { while ($row = $result->fetch_row()) { printf ("%s %s %s\n", $row[0], $row[1], $row[2]); } } /* Clean up table CountryLanguage */ $maxdb->query("DELETE FROM temp.mycity WHERE name='Georgetown'"); $maxdb->query("DELETE FROM temp.mycity WHERE name='New Orleans'"); printf("%d Rows deleted.\n", $maxdb->affected_rows); /* close connection */ $maxdb->close(); ?>`

The above examples would produce the following output:

    1 Row inserted.
    1 Row inserted.
    11111 Georgetown NY
    22222 New Orleans LA
    2 Rows deleted.

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