pg_escape_literal

(PHP 5 >= 5.4.4, PHP 7, PHP 8)

pg_escape_literal Escape a literal for insertion into a text field

说明

pg_escape_literal(PgSql\Connection $connection = ?, string $data): 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.

注意:

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

参数

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().

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.

更新日志

版本 说明
8.1.0 现在 connection 参数接受 PgSql\Connection 实例,之前接受 resource

示例

示例 #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})");
?>

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