What are some best practices for storing POST field values in an array in PHP?

When storing POST field values in an array in PHP, it is important to sanitize and validate the input data to prevent security vulnerabilities such as SQL injection or cross-site scripting attacks. One best practice is to use the filter_input_array function to filter and retrieve input values from the $_POST superglobal array. This function allows you to specify a filter for each input field, ensuring that only valid data is stored in the array. 

// Sanitize and validate POST field values
$post_data = filter_input_array(INPUT_POST, [
    'field1' => FILTER_SANITIZE_STRING,
    'field2' => FILTER_VALIDATE_EMAIL,
    'field3' => FILTER_VALIDATE_INT
]);

// Access sanitized and validated values
$field1_value = $post_data['field1'];
$field2_value = $post_data['field2'];
$field3_value = $post_data['field3'];

// Store values in an array
$post_values = [
    'field1' => $field1_value,
    'field2' => $field2_value,
    'field3' => $field3_value
];

Keywords

POST field values array storing PHP

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