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# pg_escape_bytea

(PHP 4 >= 4.2.0)

pg_escape_bytea -- Escape binary for bytea type

## Description

string pg_escape_bytea ( string data)

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

> Note: When you SELECT bytea type, PostgreSQL returns octal byte value prefixed by \ (e.g. \032). Users are supposed to convert back to binary format by yourself.

> This function requires PostgreSQL 7.2 or later. With PostgreSQL 7.2.0 and 7.2.1, bytea type must be casted 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 cast. Exception is when client and backend character encoding does not match, there may be multi-byte stream error. User must cast to bytea to avoid this error.

> Newer PostgreSQL will support unescape function. Support for built-in unescape function will be added when it's available.

See also pg_escape_string()

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