What are some potential pitfalls of manually updating version numbers in a PHP file?

Manually updating version numbers in a PHP file can lead to human error, such as forgetting to update all instances of the version number or making mistakes in the syntax. To avoid this, you can define the version number as a constant in a separate file and include it in your PHP files. This way, you only need to update the version number in one place. 

// version.php
define('VERSION', '1.0.0');
```

```php
// index.php
include 'version.php';
echo 'Current version: ' . VERSION;

Keywords

version numbers PHP file manual update compatibility issues syntax errors

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