PostgreSQL Functions
PHP Manual

pg_escape_literal

Escape a literal for insertion into a text field

Description

stringfalse pg_escape_literal(PgSql\Connection $connection = ?, string $string)

pg_escape_literal escapes a literal for querying the PostgreSQL database. It returns an escaped literal in the PostgreSQL format. pg_escape_literal adds quotes before and after data. Users should not add quotes. Use of this function is recommended instead of pg_escape_string. If the type of the column is bytea, pg_escape_bytea must be used instead. For escaping identifiers (e.g. table, field names), pg_escape_identifier must be used.

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_literal example

<?php 
  // Connect to the database
  $dbconn = pg_connect('dbname=foo');
  
  // Read in a text file (containing apostrophes and backslashes)
  $data = file_get_contents('letter.txt');
  
  // Escape the text data
  $escaped = pg_escape_literal($data);
  
  // Insert it into the database. Note that no quotes around {$escaped}
  pg_query("INSERT INTO correspondence (name, data) VALUES ('My letter', {$escaped})");
?>

See Also

  • pg_escape_identifier
  • pg_escape_bytea
  • pg_escape_string