Why can't I remember the PHP function name? what should I do?

Why can't I remember PHP function names? why can't I remember PHP function names? when I use more functions, I remember that although there are many php functions, there are dozens of commonly used functions, well. At the beginning, this was the case. You can remember it when you use it more ., Weng Yue: I have no idea about him, but I am familiar with him. well, I have been a programmer for a long time. I have been familiar with many languages, and I have touched a variety of operating systems. the APIs are also cloudization ., Why can't I remember the PHP function name?
Why can't I remember the PHP function name?

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Remember when you use more
Although php has many functions, dozens of commonly used functions
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Well. At the beginning, this was the case. If you use more, you can remember it.
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Weng Yue
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Well, programmers have been working for a long time, have more access to languages, have a variety of operating systems, and the APIs are also cloudification.
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I read the manual several times a day and remember it.
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Practice makes perfect. None.
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Remember some frequently used and infrequently used query manuals
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Remember the commonly used ones. you can check the manual when you need to use the functions that are not commonly used, it is possible to refer to the manual in English.