Why Can\'t I Use LOAD DATA LOCAL INFILE in PHP?

LOAD DATA LOCAL INFILE Restriction in PHP

Loading data from a local file using LOAD DATA LOCAL INFILE can be a convenient feature for importing data. However, in certain cases, users may encounter an issue when attempting to execute it through PHP.

PHP Restrictions with LOAD DATA LOCAL INFILE

PHP restricts the use of LOAD DATA LOCAL INFILE due to security concerns. The local file read operation is considered a potential security vulnerability, which is why PHP prohibits its execution. By default, PHP applications do not have the necessary privileges to access local files.

Resolving the Problem

To overcome this issue, users need to enable local file read permissions for PHP. This can be achieved by setting the PDO::MYSQL_ATTR_LOCAL_INFILE attribute to true when instantiating the PDO object.

Code Example

The following code snippet demonstrates how to set the PDO::MYSQL_ATTR_LOCAL_INFILE attribute:

<code class="php">$conn = new PDO("mysql:host=$server;dbname=$database;", "$user", "$password", array(
    PDO::MYSQL_ATTR_LOCAL_INFILE => true,
));</code>

Once this attribute is enabled, the LOAD DATA LOCAL INFILE operation should execute successfully from PHP applications.

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