Unable to calculate the number of uploaded files

Unable to calculate the number of uploaded files
Just copied a section of JavaScript that adds a text box node
But now the appearance of a click "Add another", will add a new Node
I added Echo ' Count (($_files[' img ' [' name ']) to the code after the submission;

Added two files, print out 1, how did not calculate it?

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Which value is 1, it is recommended to post the code for analysis.
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Let's print the next $_files and look at it!
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This is your initial control.
img[] "/>

This is the control you attached
Input.setattribute (' name ', ' files[] ');//Set the input node Name property to files[], passed to the server side as an array

This is the control you're dealing with.
$num =count (($_files[' img' [' name '])); Calculate the number of uploaded files

It should be clear, right? A little more careful.

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