必须为绝对值
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@ -81,6 +81,8 @@ public function cost($price = null)
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$this->load('user');
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$this->load('user');
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$price = abs($price);
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if ($this->user->balance < 10) {
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if ($this->user->balance < 10) {
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$amount = 1;
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$amount = 1;
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