Hi folks,

I am in doubt of this, I thought pure php iteration is slower than calling
join or other extension functions.

but the result shows:  https://gist.github.com/b2a94c94ca66a55814d4

Using Pure PHP for iteration is faster than using join function. why ?
because of the php runtime typecasting ?

And json_encode is the most slowest.

Best Regards,

Yo-An Lin

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