PDO::quote
(no version information, might be only in CVS)
PDO::quote --
Quotes a string for use in a query.
Beskrivelse
string
PDO::quote ( string string [, int parameter_type] )
Advarsel |
Denne funktion er
EKSPERIMENTABEL. Virkemåden af denne funktion,
navnet på funktionen, og andet ellers dokumenteret om denne
funktion, ændres muligvis uden advarsel i en fremtidig version af PHP.
Brug af denne funktion er på ejet ansvar. |
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.
Parameterliste
- 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.
Returneringsværdier
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.
Eksempler
Eksempel 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"; ?>
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Ovenstående eksempel vil udskrive: Unquoted string: Nice
Quoted string: 'Nice' |
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Eksempel 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"; ?>
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Ovenstående eksempel vil udskrive: Unquoted string: Naughty ' string
Quoted string: 'Naughty '' string' |
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Eksempel 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"; ?>
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Ovenstående eksempel vil udskrive: Unquoted string: Co'mpl''ex "st'"ring
Quoted string: 'Co''mpl''''ex "st''"ring' |
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Se også
PDO::prepare() |
PDOStatement::execute() |