Restores an easy handle's options to their defaults. This guide demonstrates its use in PHP code and explains when the result or side effect needs extra checks.
What It Does
Restores an easy handle's options to their defaults.
Syntax and Parameters
The examples below show a real call to curl_reset with suitable arguments. Read the function call in context: its connection, handle, input data or other prerequisites are created before use.
Requirements: cURL extension; HTTP client and transfer-handling tools.
Example 1: Core Behavior
The first case demonstrates the precise handle or result type.
<?php
$ch = curl_init('https://api.example.test/health');
curl_setopt_array($ch, [CURLOPT_RETURNTRANSFER => true, CURLOPT_TIMEOUT => 3, CURLOPT_CONNECTTIMEOUT => 2]);
curl_reset($ch);
curl_setopt($ch, CURLOPT_URL, 'https://api.example.test/health');
curl_setopt($ch, CURLOPT_TIMEOUT, 5);
echo "Options reset and URL set again";Observe the returned value or changed resource state. A successful function call can still require additional checks before a higher-level operation is considered successful.
Example 2: Alternative or Failure Case
The second case checks behavior under a different configuration or request.
<?php
$ch = curl_init('https://api.example.test/products');
curl_setopt_array($ch, [CURLOPT_RETURNTRANSFER => true, CURLOPT_TIMEOUT => 4, CURLOPT_CONNECTTIMEOUT => 2]);
curl_reset($ch);
curl_setopt($ch, CURLOPT_URL, 'https://api.example.test/products');
curl_setopt($ch, CURLOPT_TIMEOUT, 6);
echo "Options reset and URL set again";Compare the different inputs, environment assumptions or result checks. Do not use a transport-level success value as proof that all business-level requirements were met.
Practical Example: Applying the Rule
The practical case shows how to inspect the operation outcome instead of assuming success.
<?php
$ch = curl_init('https://api.example.test/orders');
curl_setopt_array($ch, [CURLOPT_RETURNTRANSFER => true, CURLOPT_TIMEOUT => 5, CURLOPT_CONNECTTIMEOUT => 2]);
curl_reset($ch);
curl_setopt($ch, CURLOPT_URL, 'https://api.example.test/orders');
curl_setopt($ch, CURLOPT_TIMEOUT, 7);
echo "Options reset and URL set again";In an application, convert low-level failures into controlled responses and log only non-sensitive diagnostic context.
Important Behavior and Edge Cases
Reset removes custom TLS, timeout and URL settings; reconfigure before the next transfer.
TLS validation, bounded timeouts and a destination allowlist are essential for network requests involving potentially untrusted targets.
Comparison with Related Functions or Patterns
| Approach | When it differs |
|---|---|
| curl_reset | Restores an easy handle's options to their defaults. |
| Related API or pattern | curl_copy_handle copies an existing configuration instead of clearing it. |
Common Beginner Mistakes
| Mistake | Correct approach |
|---|---|
| Forgetting destination validation, timeouts or TLS verification during a transfer | Reset removes custom TLS, timeout and URL settings; reconfigure before the next transfer. |
| Substituting a related API without checking its semantics | curl_copy_handle copies an existing configuration instead of clearing it. |
Key Takeaways
- Restores an easy handle's options to their defaults.
- Reset removes custom TLS, timeout and URL settings; reconfigure before the next transfer.
- curl_copy_handle copies an existing configuration instead of clearing it.
Select this API or pattern based on its documented behavior and the trust boundaries in your own application, and test all external integrations against their actual deployments.