Remove all characters after "-"

I thought this would work but it appears to be only removing the - and the whitespace after it.

$itemList[] = preg_replace('开发者_运维百科/-(.*?)/i', "", $temp['item']);

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Try:

$itemList[] = preg_replace('/-(.*)$/i', "", $temp['item']);

The $ symbol matches the end of the input, so forces the .* to grab to the end.

Adding a ? after the * makes it un-greedy, meaning it will grab the minimum possible, not the maximum possible, so in this case it is exactly what you don't want.

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Why were you using non-greedy *? ?

$itemList[] = preg_replace('/-.*/i', "", $temp['item']);

Also, the capturing parens were unnecessary.