vBulletin is particularly difficult to code for without a copy of their source. There isn't enough information in the documentation to allow you to code with confidence. More importantly, you have no way of testing your code.
I don't know about the newer licenses, but I think some of the older ones are transferable. You might be able to pick up a second-hand license for a reasonable price if a new license is outside your budget. If you go down this route, be careful of code changes between vB 3.7, 3.8 and 4.0.
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如果没有源代码的副本，vBulletin 的编码尤其困难。文档中没有足够的信息让您可以放心地进行编码。更重要的是，您无法测试您的代码。
我不知道新的许可证，但我认为一些旧的许可证是可以转让的。如果新许可证超出您的预算，您也许可以以合理的价格购买二手许可证。如果您沿着这条路线走下去，请注意 vB 3.7、3.8 和 4.0 之间的代码更改。
vBulletin is particularly difficult to code for without a copy of their source. There isn't enough information in the documentation to allow you to code with confidence. More importantly, you have no way of testing your code.
I don't know about the newer licenses, but I think some of the older ones are transferable. You might be able to pick up a second-hand license for a reasonable price if a new license is outside your budget. If you go down this route, be careful of code changes between vB 3.7, 3.8 and 4.0.