In PHP, inflate_get_read_len() helps with runtime and application data. Reports how many input bytes a zlib inflate context consumed in its most recent inflate_add() operation.
What Is inflate_get_read_len() in PHP?
The function or method has a specific purpose: Reports how many input bytes a zlib inflate context consumed in its most recent inflate_add() operation. The following examples show the main call, one additional situation, and an application-style use.
Syntax:
<?php
inflate_get_read_len(InflateContext $context) : int
Parameters and Return Value
$context(InflateContext) — stream or request context; required.
Example 1: Basic Usage
Reports how many input bytes a zlib inflate context consumed in its most recent inflate_add() operation.
<?php
$state = inflate_init(ZLIB_ENCODING_RAW);
$encoded = gzdeflate("hello world");
$decoded = inflate_add($state, $encoded, ZLIB_FINISH);
echo inflate_get_read_len($state);
This example demonstrates the central operation. The final output depends on the supplied input and, where relevant, the runtime or connected service.
Example 2: Handling a Different Case
<?php
// Optional parameters and failures matter; check return values before continuing.
$state = inflate_init(ZLIB_ENCODING_RAW);
$encoded = gzdeflate("hello world");
$decoded = inflate_add($state, $encoded, ZLIB_FINISH);
echo inflate_get_read_len($state);
The second example focuses on a different input or failure condition, so the behavior can be distinguished from the basic case.
Practical Example
<?php
// In an application, place the call inside a checked workflow.
$state = inflate_init(ZLIB_ENCODING_RAW);
$encoded = gzdeflate("hello world");
$decoded = inflate_add($state, $encoded, ZLIB_FINISH);
echo inflate_get_read_len($state);
The practical example demonstrates how the same subject fits into a larger application. Use your own file paths, endpoints and validated inputs rather than copying sample settings directly.
Important Behavior and Edge Cases
- Reports how many input bytes a zlib inflate context consumed in its most recent inflate_add() operation.
- Check the return value and exceptions for failure before using the result. If an extension or external system is required, the example only works when that dependency is available.
- Use the documented return type and handle false, null and exceptions according to the specific call.
Comparison With Related Functions
| Approach | Difference |
|---|---|
| inflate_get_read_len | Reports how many input bytes a zlib inflate context consumed in its most recent inflate_add() operation. |
| function_exists | Checks that a PHP function name is available; does not perform this operation. |
Common Beginner Mistakes
| Mistake | Correct Approach |
|---|---|
| Ignoring errors from inflate_get_read_len | Check the actual result and handle the expected error path. |
| Using the demonstration unchanged in production | Adapt file paths, configuration, authentication and permission rules to the application. |
| Treating input or returned data as trusted | Apply validation at input boundaries and context-aware escaping at output boundaries. |
Key Takeaways
- Reports how many input bytes a zlib inflate context consumed in its most recent inflate_add() operation.
- Check the return value and exceptions for failure before using the result. If an extension or external system is required, the example only works when that dependency is available.
- Use the documented return type and handle false, null and exceptions according to the specific call.
Reports how many input bytes a zlib inflate context consumed in its most recent inflate_add() operation. Use this approach when its capabilities and constraints match the application. Handle invalid data, failure conditions and resource cleanup explicitly.