PHP kézikönyv
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# pg_escape_bytea

(PHP 4 >= 4.2.0, PHP 5)

pg_escape_bytea -- Escape a string for insertion into a bytea field

## Leírás

string pg_escape_bytea ( string data )

pg_escape_bytea() escapes string for bytea datatype. It returns escaped string.

> Megjegyzés: When you SELECT a bytea type, PostgreSQL returns octal byte values prefixed with '\' (e.g. \032). Users are supposed to convert back to binary format manually.

> This function requires PostgreSQL 7.2 or later. With PostgreSQL 7.2.0 and 7.2.1, bytea values must be cast when you enable multi-byte support. i.e. INSERT INTO test_table (image) VALUES ('$image_escaped'::bytea); PostgreSQL 7.2.2 or later does not need a cast. The exception is when the client and backend character encoding does not match, and there may be multi-byte stream error. User must then cast to bytea to avoid this error.

## Paraméterek

data

  A string containing text or binary data to be inserted into a bytea column.

## Visszatérési értékek

A string containing the escaped data.

## Példák

Példa 1. pg_escape_bytea() example
`<?php // Connect to the database $dbconn = pg_connect('dbname=foo'); // Read in a binary file $data = file_get_contents('image1.jpg'); // Escape the binary data $escaped = pg_escape_bytea($data); // Insert it into the database pg_query("INSERT INTO gallery (name, data) VALUES ('Pine trees', '{$escaped}')"); ?>`

## Lásd még

pg_unescape_bytea()
pg_escape_string()

Előző | Tartalom | Következő
pg_end_copy | Fel | pg_escape_string