PHP:pg_escape_literal()的用法_PostgreSQL函数

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pg_escape_literal

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(PHP 5 >= 5.4.4)

pg_escape_literal — Escape a literal for insertion into a text field

说明 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.

Note:

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

参数

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().

data

A string containing text to be escaped.

返回值

A string containing the escaped data.

范例

Example #1 pg_escape_literal() example

<?php//Connecttothedatabase$dbconn=pg_connect('dbname=foo');//Readinatextfile(containingapostrophesandbackslashes)$data=file_get_contents('letter.txt');//Escapethetextdata$escaped=pg_escape_literal($data);//Insertitintothedatabase.Notethatnoquotesaround{$escaped}pg_query("INSERTINTOcorrespondence(name,data)VALUES('Myletter',{$escaped})");?>

参见

pg_escape_identifier() - Escape a identifier for insertion into a text field pg_escape_bytea() - 转义 bytea 类型的二进制数据 pg_escape_string() - 转义 text/char 类型的字符串

PHP:pg_escape_identifier()的用法_PostgreSQL函数 pg_escape_identifier(PHP5=5.4.4)pg_escape_identifierEscapeaidentifierforinsertionintoatextfield说明stringpg_escape_identifier([resource$connection],string$data)pg_escape_identifier()escapesaidentifi

PHP:pg_copy_to()的用法_PostgreSQL函数 pg_copy_to(PHP4=4.2.0,PHP5)pg_copy_to将一个表拷贝到数组中说明arraypg_copy_to(resource$connection,string$table_name[,string$delimiter[,string$null_as]])pg_copy_to()将一个表拷贝到数

PHP:pg_copy_from()的用法_PostgreSQL函数 pg_copy_from(PHP4=4.2.0,PHP5)pg_copy_from根据数组将记录插入表中说明boolpg_copy_from(resource$connection,string$table_name,array$rows[,string$delimiter[,string$null_as]])pg_copy_from()将

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