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mysqli::real_escape_string

mysqli_real_escape_string

(PHP 5)

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

Descrierea

Stil obiect-orientat

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

Stil procedural

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.

Parametri

link

Numai stilul procedural: Un identificator al legăturii întors de mysqli_connect() sau mysqli_init()

escapestr

The string to be escaped.

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

Valorile întoarse

Returns an escaped string.

Exemple

Example #1 mysqli::real_escape_string() example

Stil obiect-orientat

<?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();
?>

Stil procedural

<?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);
?>

Exemplele de mai sus vor afișa:

Error: 42000
1 Row inserted.

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