DateTime::__construct(): Failed to parse time string (16/07/2020) at position 0 (1): Unexpected character
Stefan Izdrail
Founder & Senior Architect · 2026-06-29
Title: Resolving DateTime::__construct() Issues in Laravel Apps using Configurations and Formatting
In many applications, we often encounter issues related to date time string parsing such as DateTime::__construct(): Failed to parse time string with unexpected characters. This problem arises due to mismatching configuration settings between the different sections of your application. It's essential to ensure that all components use consistent formats and values for dates in order to avoid these errors.
Let's first understand what is going on. The error is occurring because our application is trying to parse a date string (16/07/2020) using the format configuration defined in config/app.php, as well as through Carbon instances. While '16' represents 'June' in US convention, it should be '15' since we are expecting that day ('15th') of a particular month. In this case, our code is using '07', which refers to the month 'July'. It fails because, according to the current configuration set up, there seems to be an unexpected character at position 0 (the first character). This misalignment triggers the error in question.
To fix this issue, we can make the following adjustments to our code and configurations:
1. Update config/app.php: Change the date format from 'd/m/Y' used for all dates related configuration to something more appropriate. A common standard is 'Y-m-d', which is consistent with SQL conventions and allows easier integration with other systems. This will ensure that the dates are parsed in a uniform manner across the entire application.
2. Migrate Model attribute definition: In our model, we need to modify our setter and getter methods to take advantage of Carbon's capabilities. Instead of using $input directly for both methods, we should first parse it using Carbon::createFromFormat() with a suitable format like 'Y-m-d'. Our updated code will look something like this:
```php
protected function setHolidayDateAttribute($input)
{
$this->attributes['holiday_date'] =
Carbon::createFromFormat('Y-m-d', $input)->format('Y-m-d');
}
public function getHolidayDateAttribute($input)
{
return Carbon::parse($input)->format(config('app.date_format'));
}
```
3. Adjust the Blade view: In our view blade file, instead of parsing the date directly using Carbon functions, we should use {{ Carbon\Carbon::parse($holiday->holiday_date)->format('d-m-Y') ?? '' }} as shown below:
```php
@foreach($holidays as $key => $holiday)
{{ Carbon\Carbon::parse($holiday->holiday_date)->format('d-m-Y') ?? '' }}
@endforeach
```
By making these adjustments, you should be able to avoid the issues related to DateTime::__construct() errors and ensure consistency throughout your Laravel application. Please refer to the updated code snippets in this blog post for better understanding and implementation.
Remember that maintaining a clear communication between different parts of your application is essential when working with date-related functionalities. This ensures both correct parsing and easy troubleshooting when errors arise, allowing you to provide a smooth experience to users interacting with your web app. As always, test thoroughly after any changes to guarantee the stability of your system.