When working with PHP, you may need to retrieve warnings and errors from the last date parser. This guide explains the operation, shows what its arguments mean, and uses three separate examples to make the result easier to understand.
date_get_last_errors: PHP returns false when the latest parsing operation had no warnings or errors.
What Is date_get_last_errors in PHP?
Retrieve warnings and errors from the last date parser. PHP returns false when the latest parsing operation had no warnings or errors.
Syntax:
date_get_last_errors(): array|false
Parameters and return value: The signature above identifies the arguments and return type where the API has a single call. For topic guides, follow the sequence of calls in the examples. Always distinguish a returned value from an object or variable modified by reference.
Important: Call immediately after parsing; another date parser can replace the recorded error state.
Example 1: Basic Usage
This example introduces the operation with a short and predictable input.
<?php
$date = date_create_from_format("!Y-m-d", "2026-02-30");
print_r(date_get_last_errors());
Output:
Array
(
[warning_count] => 1
[warnings] => Array
(
[10] => The parsed date was invalid
)
[error_count] => 0
[errors] => Array
(
)
)
The code focuses on the main operation. PHP returns false when the latest parsing operation had no warnings or errors.
Example 2: Another Case
Now compare a different input, locale, date, or option to see another part of the behavior.
<?php
$date = date_create_from_format("!Y-m-d", "2026-10-16");
var_dump(date_get_last_errors());
Output:
bool(false)
What changes? Call immediately after parsing; another date parser can replace the recorded error state.
Practical Example: Applying It in an Application
Use the following separate example as a starting point for a small application task. Check any extension or environment requirements below before running it.
<?php
$inputDates = ["2026-02-30", "2026-02-28"];
foreach ($inputDates as $inputDate) {
$date = date_create_from_format("!Y-m-d", $inputDate);
$errors = date_get_last_errors();
$valid = $date !== false && ($errors === false || ($errors["warning_count"] === 0 && $errors["error_count"] === 0));
echo $inputDate . ": " . ($valid ? "valid" : "invalid") . PHP_EOL;
}
Output:
2026-02-30: invalid
2026-02-28: valid
The practical example demonstrates how to apply this operation to multiple values, a reusable task, or a validated input. PHP returns false when the latest parsing operation had no warnings or errors.
Important Behavior and Edge Cases
- Core behavior: PHP returns false when the latest parsing operation had no warnings or errors.
- Inputs and results: Call immediately after parsing; another date parser can replace the recorded error state.
- Alternatives: checkdate() validates numeric parts without using the date parser.
Comparison With Related Functions
| Function or Approach | When to Use It |
|---|---|
date_get_last_errors | Retrieve warnings and errors from the last date parser. |
| Related PHP approach | checkdate() validates numeric parts without using the date parser. |
Common Beginner Mistakes
| Mistake | Correct Approach |
|---|---|
| Using an incorrect input or option | Call immediately after parsing; another date parser can replace the recorded error state. |
| Confusing this API with a related operation | checkdate() validates numeric parts without using the date parser. |
| Assuming output is identical across environments | Check return values and required extensions or versions. Use explicit locale, timezone or encoding settings when they affect the result. |
Key Takeaways
- date_get_last_errors helps you retrieve warnings and errors from the last date parser.
- PHP returns false when the latest parsing operation had no warnings or errors.
- Call immediately after parsing; another date parser can replace the recorded error state.
Use date_get_last_errors when you need to retrieve warnings and errors from the last date parser. Start with the first example, compare the second, and adapt the practical example to your inputs. Confirm the return value and environment requirements before adding it to production code.