pg_escape_identifier
(PHP 5 >= 5.4.4, PHP 7, PHP 8)
pg_escape_identifier — Escape a identifier for insertion into a text field
說明
pg_escape_identifier() escapes a identifier (e.g. table, field names) for querying the database. It returns an escaped identifier string for PostgreSQL server. pg_escape_identifier() adds double quotes before and after data. Users should not add double quotes. Use of this function is recommended for identifier parameters in query. For SQL literals (i.e. parameters except bytea), pg_escape_literal() or pg_escape_string() must be used. For bytea type fields, pg_escape_bytea() must be used instead.
注意:
This function has internal escape code and can also be used with PostgreSQL 8.4 or less.
參數
-
connection -
An PgSql\Connection instance. When
connectionis unspecified, the default connection is used. The default connection is the last connection made by pg_connect() or pg_pconnect().警告As of PHP 8.1.0, using the default connection is deprecated.
-
data -
A string containing text to be escaped.
返回值
A string containing the escaped data.
更新日誌
| 版本 | 說明 |
|---|---|
| 8.1.0 |
現在 connection 參數接受 PgSql\Connection
實例，之前接受 資源(resource)。
|
範例
示例 #1 pg_escape_identifier() example
<?php
// Connect to the database
$dbconn = pg_connect('dbname=foo');
// Escape the table name data
$escaped = pg_escape_identifier($table_name);
// Select rows from $table_name
pg_query("SELECT * FROM {$escaped};");
?>
參見
- pg_escape_literal() - Escape a literal for insertion into a text field
- pg_escape_bytea() - 轉義 bytea 型別的二進制數據
- pg_escape_string() - 轉義 text/char 型別的字串