The variables required in the PHP loop block are defined outside the loop or in the loop? For example, does the definition create a variable in each loop? Php ------ solution ------------------ it's hard to say, let's look at your needs ------ solution ------------------ depends on the variable you need in the PHP loop block. Is it better to define it in the loop or in the loop?
For example, does the definition create a variable in each loop?
Php
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Well, let's look at your needs.
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This depends on your requirements. if you want to change the value of a variable, you can use the variable for the next time and put it on the outside. if it is only effective in each loop, it is placed on the inside.
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Can be placed outside, not inside
Can be placed on the outer layer instead of on the internal layer
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If you want to use it multiple times without changing the variable value, we recommend that you put it out. If it is used only in a loop and the value may change, put it in it.
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In my opinion: after using a variable, remember to unset it, so you don't have to worry about it.
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Reference:
Reference: If you want to use it multiple times without changing the variable value, we recommend that you put it out. If it is used only in a loop and the value may change, put it in it.
Each use is a new value.
Agree with the upstairs, not unset. Since the variable values are different, you only need to assign a value to the variable before each use. You don't have to worry about putting it inside or outside.
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The variable will not change during the cycle if it is placed in the external body of the loop as needed; if it is placed in the circulatory body, the variable will change during the cycle
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It is defined outside the loop body. after each use in the loop body, it is initialized to the original state.
