Rawurlencode and urlencode of PHP

PHP rawurlencode and urlencode problems: both functions are for string escaping so that they are suitable for file names. Which one should I use? Which is more standard? Conclusion: rawurlencode complies with the international standard memorandum RFC1738, the main difference with the above is that the escape of space is + rather than % 20javascript's encodeURL is also the 94-year standard PHP rawurlencode and urlencode

Problem: both functions are for string escaping so that they can be used as file names. Which one should I use? Which is more standard?

Conclusion:
Rawurlencode complies with RFC 1738,
Urlencode implements the traditional method. The main difference between urlencode and the above method is that the escape of spaces is '+' rather than '% 20'
The encodeURL of javascript is also a 94-year standard,

Javascript escape is another way to mark unicode encoding with "% xxx.

Rawurlencode is recommended in PHP. Discard urlencode

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Example
Source:

Super invincible sadha sajdh data sample sdls fhejrthcxzb.file.jpeg

PHP urlencode:

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PHP rawurlencode:

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Javascript encodeURI:

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Javascript escape:

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