PHP Manual: pg_escape

Description

function pg_escape_identifier(PgSql\Connection $connection = ?, string $string): string|false

pg_escape_identifier() escapes an 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.

Parameters

connection

An PgSql\Connection instance. When connection is unspecified, the default connection is used. The default connection is the last connection made by pg_connect() or pg_pconnect().

Warning

As of PHP 8.1.0, using the default connection is deprecated.

string

A string containing text to be escaped.

Return Values

A string containing the escaped data, or false on failure.

Changelog

Version	Description
8.1.0	The `connection` parameter expects an PgSql\Connection instance now; previously, a resource was expected.

Examples

Example #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};");
?>

pg_escape_identifier

Description

Parameters

Return Values

Changelog

Examples

See Also