How to automatically use the namespace in the header when phpstorm uses classes

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subject use
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how to set it up next?

Mar.13,2021

Perferences- > Editor- > General- > Auto Import choose to enable automatic introduction of namespaces.

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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-64f5-1bf16de-31d9a.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1bf16de-31d9a.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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