mysqli::real_connect
mysqli::real_query
MySQLi
PHP Manual

# mysqli::real_escape_string

# mysqli_real_escape_string

(PHP 5)

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

### Descrição

Estilo orientado a objetos

string mysqli::escape_string ( string `$escapestr` )
string mysqli::real_escape_string ( string `$escapestr` )

Estilo de procedimentos

string mysqli_real_escape_string ( mysqli `$link` , string `$escapestr` )

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

### Parâmetros

`link`

  Apenas para estilo de procedimento: Um identificador de conexão retornado por mysqli_connect() or mysqli_init()

`escapestr`

  The string to be escaped.

  Characters encoded are NUL (ASCII 0), \n, \r, \, ', ", and Control-Z.

### Valor Retornado

Returns an escaped string.

### Exemplos

Exemplo #1 mysqli::real_escape_string example

Estilo orientado a objetos

`<?php
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
$mysqli->query("CREATE TEMPORARY TABLE myCity LIKE City");
$city = "'s Hertogenbosch";
/* this query will fail, cause we didn't escape $city */
if (!$mysqli->query("INSERT into myCity (Name) VALUES ('$city')")) {
printf("Error: %s\n", $mysqli->sqlstate);
}
$city = $mysqli->real_escape_string($city);
/* this query with escaped $city will work */
if ($mysqli->query("INSERT into myCity (Name) VALUES ('$city')")) {
printf("%d Row inserted.\n", $mysqli->affected_rows);
}
$mysqli->close();
?>`

Estilo de procedimentos

`<?php
$link = mysqli_connect("localhost", "my_user", "my_password", "world");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
mysqli_query($link, "CREATE TEMPORARY TABLE myCity LIKE City");
$city = "'s Hertogenbosch";
/* this query will fail, cause we didn't escape $city */
if (!mysqli_query($link, "INSERT into myCity (Name) VALUES ('$city')")) {
printf("Error: %s\n", mysqli_sqlstate($link));
}
$city = mysqli_real_escape_string($link, $city);
/* this query with escaped $city will work */
if (mysqli_query($link, "INSERT into myCity (Name) VALUES ('$city')")) {
printf("%d Row inserted.\n", mysqli_affected_rows($link));
}
mysqli_close($link);
?>`

The above examples will output:

    Error: 42000
    1 Row inserted.

### Veja Também

- mysqli_character_set_name() - Retorna o conjunto de caracteres padrão para a conexão com o banco de dados

mysqli::real_connect
mysqli::real_query
MySQLi
PHP Manual