How do you reindex an array in PHP but with indexes starting from 1?

You may want to consider why you want to use a 1-based array at all. Zero-based arrays (when using non-associative arrays) are pretty standard, and if you're wanting to output to a UI, most would handle the solution by just increasing the integer upon output to the UI.

Think about consistency—both in your application and in the code you work with—when thinking about 1-based indexers for arrays.

Why reindexing? Just add 1 to the index:

foreach ($array as $key => $val) {
    echo $key + 1, '<br>';
}

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Edit   After the question has been clarified: You could use the array_values to reset the index starting at 0. Then you could use the algorithm above if you just want printed elements to start at 1.

If you want to re-index starting to zero, simply do the following:

$iZero = array_values($arr);

If you need it to start at one, then use the following:

$iOne = array_combine(range(1, count($arr)), array_values($arr));

Here are the manual pages for the functions used:

• array_values()
• array_combine()
• range()