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# maxdb_real_escape_string

# maxdb::real_escape_string

(PECL maxdb >= 1.0)

maxdb_real_escape_string -- maxdb::real_escape_string — Escapes special characters in a string for use in an SQL statement, taking into account the current charset of the connection

### Beschreibung

Prozeduraler Stil

string maxdb_real_escape_string ( resource `$link` , string `$escapestr` )

Objektorientierter Stil

string maxdb::real_escape_string ( string `$escapestr` )

This function is used to create a legal SQL string that you can use in an SQL statement. The string escapestr is encoded to an escaped SQL string, taking into account the current character set of the connection.

Characters encoded are ', ".

### Rückgabewerte

Returns an escaped string.

### Beispiele

Beispiel #1 Objektorientierter Stil

`<?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");
$city = "'s Hertogenbosch";
/* this query will fail, cause we didn't escape $city */
if (!$maxdb->query("INSERT into temp.mycity VALUES ('11111','$city','NY')")) {
printf("Error: %s\n", $maxdb->sqlstate);
}
$city = $maxdb->real_escape_string($city);
/* this query with escaped $city will work */
if ($maxdb->query("INSERT into temp.mycity VALUES ('22222','$city','NY')")) {
printf("%d Row inserted.\n", $maxdb->affected_rows);
}
$maxdb->close();
?>`

Beispiel #2 Prozeduraler Stil

`<?php
$link = maxdb_connect("localhost", "MONA", "RED", "DEMODB");
/* check connection */
if (maxdb_connect_errno()) {
printf("Connect failed: %s\n", maxdb_connect_error());
exit();
}
maxdb_query($link, "CREATE TABLE temp.mycity LIKE hotel.city");
$city = "'s Hertogenbosch";
/* this query will fail, cause we didn't escape $city */
if (!maxdb_query($link, "INSERT into temp.mycity VALUES ('11111','$city','NY')")) {
printf("Error: %s\n", maxdb_sqlstate($link));
}
$city = maxdb_real_escape_string($link, $city);
/* this query with escaped $city will work */
if (maxdb_query($link, "INSERT into temp.mycity VALUES ('22222','$city','NY')")) {
printf("%d Row inserted.\n", maxdb_affected_rows($link));
}
maxdb_close($link);
?>`

Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:

    Warning: maxdb_query(): -5016 POS(43) Missing delimiter: ) <...>
    Error: 42000
    1 Row inserted.

### Siehe auch

- maxdb_character_set_name() - Returns the default character set for the database connection

maxdb_real_connect
maxdb_real_query
MaxDB Funktionen
PHP Manual