删除数组PHP中的空白项[重复]

Question

This question already has an answer here:

• Remove empty array elements 25 answers

I have a textarea box that takes barcodes separated by a new line. When they are processed, the new lines become commas. But if somebody inputs:

123456


234567
...

with a bunch of spaces under each code as such, it then becomes

$barcode_list = 123456,,,234567

I am able to strip the commas from the end, and I have tried:

$array = explode(",", $barcode_list);
foreach($array as $item){ //Separate each item
    if ($item == "") {
        unset($item);
    }

but it doens't seem to work, I still get mysqli errors etc. Is there any way to get around this?

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Answer 1

You should first remove unnecessary commas, then explode. Fewer steps...

// every sequence of commas becomes one comma 
$barcode_list=preg_replace("/,+/",",",$barcode_list);
// explode the string into an array
$array = explode(",", $barcode_list);