In PHP, simulate a multi-client access server can be implemented in the following ways. The specific methods are selected according to the requirements:
Method 1: Use cURL Multi-Request (Multi Handle)
Concurrent requests are implemented through the curl_multi_* series functions, simulating the simultaneous access of multiple clients.
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Method 2: Use multi-process (pcntl extension)
Create a child process to simulate multiple clients (requires a Linux environment) through pcntl_fork().
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Method 3: Use loop to simulate batch requests
Send multiple requests in a simple loop (not concurrent, but simulates continuous access).
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Method 4: Use third-party tools (recommended)
If you need a more professional stress test, you can use the tool directly:
Apache Bench (ab): Command line tools such as ab -n 1000 -c 100
JMeter: Graphical tool that supports complex scene simulation
Locust: Python tool that supports distributed testing
Things to note
Server pressure: Simulating multiple clients may put pressure on the target server and legal authorization is required.
PHP environment limitations:
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pcntl extension requires a Linux environment and may be disabled.
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Shared hosting may limit multiple processes or concurrent requests.
Performance optimization: Use curl_multi or asynchronous frameworks (such as ReactPHP) to improve efficiency.
Choose the appropriate method according to the specific needs, and it is recommended to give priority to using tools (such as ab or JMeter) for professional stress testing.