What are common issues that can arise when inserting data from a text file into a database using PHP, and how can they be resolved?

Issue: Data format mismatch between the text file and database columns can cause errors when inserting data. Solution: Ensure that the data from the text file is properly formatted and matches the database column types before inserting. 

// Read data from text file
$file = fopen("data.txt", "r");
while(!feof($file)){
    $data = fgetcsv($file);
    
    // Insert data into database table
    $sql = "INSERT INTO table_name (column1, column2) VALUES ('$data[0]', '$data[1]')";
    mysqli_query($conn, $sql);
}
fclose($file);
```

Issue: Missing or incorrect data can cause insertion errors in the database.

Solution: Validate the data from the text file before inserting it into the database to ensure it meets the required criteria.

```php
// Read data from text file
$file = fopen("data.txt", "r");
while(!feof($file)){
    $data = fgetcsv($file);
    
    // Validate data before insertion
    if(count($data) == 2){
        // Insert data into database table
        $sql = "INSERT INTO table_name (column1, column2) VALUES ('$data[0]', '$data[1]')";
        mysqli_query($conn, $sql);
    }
}
fclose($file);

Keywords

PHP text file database data insertion error handling

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