PHP 7.2.0 Release Candidate 4 Released

pg_escape_literal

(PHP 5 >= 5.4.4, PHP 7)

pg_escape_literal Escape a literal for insertion into a text field

Описание

string pg_escape_literal ([ resource $connection ], string $data )

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.

Замечание:

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

Список параметров

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(). When there is no default connection, it raises E_WARNING and returns FALSE.

data

A string containing text to be escaped.

Возвращаемые значения

A string containing the escaped data.

Примеры

Пример #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})");
?>

Смотрите также

  • pg_escape_identifier() - Escape a identifier for insertion into a text field
  • pg_escape_bytea() - Экранирует спецсимволы в строке для вставки в поле типа bytea
  • pg_escape_string() - Экранирование спецсимволов в строке запроса

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