Questions about the PHP jump menu reading value

For the read value of the PHP jump menu, I used the & lt; select & gt; selected value to obtain the value through the for loop. However, after the value is assigned, the result is "Array ". Print the result with var_dump (): Arrayarray (1) {[0] = & gt; string (3) & quot; male & quot;}. what is the problem? PHP jump menu read value
I put The selected value is obtained through the for loop, but after the value is assigned, the result is "Array ". Print the result with var_dump (): Arrayarray (1) {[0] => string (3) "male"}. what is the problem? Or are there any better results?What about the value method?

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Select returns only the specified value. Is the select name added with []?

PHP code

  
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How did you write the code?
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Get it with js
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Two foreach