PHP 7.1.21 Released

maxdb_real_escape_string

maxdb::real_escape_string

(PECL maxdb >= 1.0)

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

说明

过程化风格

string maxdb_real_escape_string ( resource $link , string $escapestr )

面向对象风格

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 ', ".

返回值

Returns an escaped string.

范例

Example #1 面向对象风格

<?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();
?>

Example #2 过程化风格

<?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);
?>

以上例程的输出类似于:

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

参见

add a note add a note

User Contributed Notes

There are no user contributed notes for this page.
To Top