PDO::quote

(no version information, might be only in CVS)

PDO::quote --  Quotes a string for use in a query.

Descripción

string PDO::quote ( string string [, int parameter_type] )

Aviso

Esta función es EXPERIMENTAL. Esto significa que el comportamiento de esta función, el nombre de esta función y en definitiva TODO lo documentado sobre esta función, puede cambiar en una futura version de PHP SIN AVISO. La advertencia queda hecha, y utilizar esta extensión queda bajo su propia responsabilidad.

PDO::quote() places quotes around the input string and escapes and single quotes within the input string, using a quoting style appropriate to the underlying driver.

If you're using this function to build SQL, it is recommended that you using prepared statements and bound parameters instead, as it is not only more convenient, but often much faster.

Not all PDO drivers implement this method (notably PDO_ODBC). Consider using prepared statements instead.

Lista de parámetros

string

The string to be quoted.

parameter_type

Provides a data type hint for drivers that have alternate quoting styles. The default value is PDO_PARAM_STR.

Valores retornados

Returns a quoted string that is theoretically safe to pass into an SQL statement. Returns FALSE if the driver does not support quoting in this way.

Ejemplos

Ejemplo 1. Quoting a normal string

<?php
$conn
= new PDO('sqlite:/home/lynn/music.sql3');

/* Simple string */
$string = 'Nice';
print
"Unquoted string: $string\n";
print
"Quoted string: " . $conn->quote($string) . "\n";
?>

El resultado del ejemplo seria:

Unquoted string: Nice
Quoted string: 'Nice'

Ejemplo 2. Quoting a dangerous string

<?php
$conn
= new PDO('sqlite:/home/lynn/music.sql3');

/* Dangerous string */
$string = 'Naughty \' string';
print
"Unquoted string: $string\n";
print
"Quoted string:" . $conn->quote($string) . "\n";
?>

El resultado del ejemplo seria:

Unquoted string: Naughty ' string
Quoted string: 'Naughty '' string'

Ejemplo 3. Quoting a complex string

<?php
$conn
= new PDO('sqlite:/home/lynn/music.sql3');

/* Complex string */
$string = "Co'mpl''ex \"st'\"ring";
print
"Unquoted string: $string\n";
print
"Quoted string: " . $conn->quote($string) . "\n";
?>

El resultado del ejemplo seria:

Unquoted string: Co'mpl''ex "st'"ring
Quoted string: 'Co''mpl''''ex "st''"ring'

Ver también

PDO::prepare()
PDOStatement::execute()

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Generated: 2007-01-26 18:01:04