Escape a identifier for insertion into a text field

# pg_escape_identifier

(PHP 5 >= 5.4.4, PHP 7)

pg_escape_identifier — Escape a identifier for insertion into a text field

### Descrierea

pg_escape_identifier ([ resource `$connection` ], string `$data` ) : string

pg_escape_identifier() escapes a identifier (e.g. table, field names) for quering 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.

> Notă:

> This function has internal escape code and can also be used with PostgreSQL 8.4 or less.

### Parametri

`connection`

  PostgreSQL database connection resource. When `connection` is not present, the default connection is used. The default connection is the last connection made by pg_connect() or pg_pconnect().

`data`

  A string containing text to be escaped.

### Valorile întoarse

A string containing the escaped data.

### Exemple

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};");
?>`

### A se vedea și

- pg_escape_literal() - Escape a literal for insertion into a text field
- pg_escape_bytea() - Escape a string for insertion into a bytea field
- pg_escape_string() - Escape a string for query