What will PHP senior engineers be asked for job-hopping interviews?

I wonder what a company will ask for when hiring a PHP senior engineer for an interview. What are the questions? how should the senior engineer of PHP prepare?

Interview php-engineer php
Aug.13,2021

questions I encountered in the interview:

  1. how to implement MySQL things.
  2. MySQL index implementation principle.
  3. PHP memory recovery principle.
  4. Why is PHP7 faster than PHP5.6?
  5. PHP memory allocation principle.
    6. What are the usage scenarios of
  6. Redis? How does Redis handle requests? How is Redis memory allocated?
  7. how do I locate problems with programs that are running online?
  8. what is IO multiplexing? Why can Swoole support high concurrency?
  9. algorithm, generally not directly test the algorithm, but through a scene to mix several algorithms to test.

computer network knowledge
projects
whether you can work overtime
whether you can't get married, because you can't work overtime
whether you have experience in developing large-flow websites
which development languages you are familiar with besides php, etc.
finding a job is the same as looking for a wife. Wish you 


php
SQL

mysql

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MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-42aff92-6472.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-42aff92-6472.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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