This operation retrieves information about a child process started through proc_open().
Before using it, identify which data, connection or runtime state the operation reads or changes. This avoids examples that appear to work but apply to a different context.
What Is proc_get_status() in PHP?
This operation retrieves information about a child process started through proc_open().
Syntax:
<?php
// Signature for reference only
proc_get_status($process) : array
Parameters and Return Value
$process— Required value argument supplied to this operation.
The declared return type is array.
Example 1: Basic Usage
<?php
$commandProcess = proc_open([PHP_BINARY, "-r", "usleep(100000);"], [0=>["pipe","r"],1=>["pipe","w"],2=>["pipe","w"]], $pipes);
if (!is_resource($commandProcess)) { throw new RuntimeException("Cannot start process"); }
print_r(proc_get_status($commandProcess));
foreach ($pipes as $pipe) { fclose($pipe); }
proc_close($commandProcess);This operation retrieves information about a child process started through proc_open().
Example 2: Another Case
<?php
$childProcess = proc_open([PHP_BINARY, "-v"], [1=>["pipe","w"],2=>["pipe","w"]], $pipes);
if (!is_resource($childProcess)) { throw new RuntimeException("Start failed"); }
var_dump(proc_get_status($childProcess)["running"]);
foreach ($pipes as $pipe) { fclose($pipe); }
proc_close($childProcess);The second example changes the input or surrounding conditions, which matters when choosing this API for real application code.
Practical Example
<?php
$runningProcess = proc_open([PHP_BINARY, "-r", "echo 123;"], [1=>["pipe","w"]], $pipes);
if (!is_resource($runningProcess)) { throw new RuntimeException("Process unavailable"); }
$processState = proc_get_status($runningProcess);
echo "PID: " . $processState["pid"];
foreach ($pipes as $pipe) { fclose($pipe); }
proc_close($runningProcess);The practical example is a teaching scenario. Change sample configuration and credentials before using a similar design in an application.
Important Behavior and Edge Cases
- Use a trusted command array, capture pipes safely and close resources; exit codes may be reported after collection.
- Relevant PHP environment: standard. Ensure the required extension and operating-system capabilities are present.
- Check results and release resources where necessary; successful syntax alone does not guarantee a successful operation.
Comparison With Related Functions
| Option | When to Use It |
|---|---|
proc_get_status | This operation retrieves information about a child process started through proc_open(). |
proc_open | Use this related operation for its different responsibilities; do not assume identical inputs or return values. |
Common Beginner Mistakes
| Mistake | Correct Approach |
|---|---|
| Assuming a successful return value | Inspect the returned value and handle failures according to this operation’s contract. |
| Using the API without its required environment | Supply the required resources, runtime configuration and permissions before calling it. |
| Copying demonstration values into production | Use application-specific validated values, secure configuration and safe error handling. |
Key Takeaways
- This operation retrieves information about a child process started through proc_open().
- Use a trusted command array, capture pipes safely and close resources; exit codes may be reported after collection.
- Validate inputs and handle failure conditions before integrating this operation into a production workflow.
This operation retrieves information about a child process started through proc_open(). Use the appropriate runtime and treat any environment-dependent output as an example, not a guaranteed result.