The sibling calls of require_once and include_once can be more problematic, as they not only need to verify the existence of the file, but also that it hasn't be included before.
require_once和include_once的同级调用更成问题，因为它们不仅需要验证文件是否存在，而且它之前没有包含在内。
Several Hamas leaders have also stated that if Palestinians agree in a referendum to accept Israel's existence, so be it.
几个哈马斯的领导人也声明说，如果巴勒斯坦人在全民公决中投票接受认可以色列的存在，那么他们也承认其存在。
Without what the Nature all brings us, there would be no more existence of Us , the human beings, and of course also no more sense for Architecture .
如果没有自然带给我们的一切，就不会再有我们人类的存在，而建筑也就失去了它的存在意义。
The loose coupling also allows business logic to be written with no knowledge of the existence of Struts.
松耦合也支持在Struts不参与的情况下编写业务逻辑。
Then, not only will you be ready for the rest of the series, but you'll also be able to use arguably the best sed in existence!
那样，不仅可以为本系列的余下部分作好准备，而且还可以使用可能是目前最好的sed。
The real situation should be: the world the existence of left-handed, there also exist right-handed, they co-exist, each other.
真实的情况应该是：世上存在着左撇子，也存在着右撇子，他们共同存在，互不相同。
But for a multi time scale power system, existence and fundamental characteristics of fast manifolds must also be studied in order to obtain the model reduction condition of fixing slow dynamics.
但对于多时间尺度的电力系统模型降阶问题而言，还必须研究快流形的存在性及其基本特征，以给出固定系统慢动态的降阶条件。
Given my new curiosity about humankind, the goal was also fascinating, because for the first time in my long existence, I knew not how it could be achieved.
从我对人类新产生的好奇心来看，他们的目的也很迷人。因为，从我存在以来，这是我第一次不知道该如何达成目标。
Beijing truck to move this characteristic is popular with people like, this is also to some extent truck can be one reason for the existence of.
北京货车搬家的这个特点是很受人们喜欢的，这也是在某种程度上货车才能存在的一个原因。
The company must also take account of the existence of competitors, who always have to be identified, monitored and defeated in the search for loyal customers.
公司还必须考虑到竞争对手的存在，在寻求忠实客户的过程中，这些竞争者必须被识别，被监视，并最终被击败。
The existence of enthalpy-entropy compensation was also confirmed, and the compensation temperature was found to be a function of absolute temperature, Tc(T).
蛋白保留过程存在焓—熵补偿，并且补偿温度是实验温度的函数。
Not only should the position and function of the subject be investigated, but also its rational structure and form of existence.
不仅要突出主体的地位与作用，而且要探求主体实践的合理形态或合理存在方式。
Supporters of the former approach claim that the existence of linguistic universals ensures translatability and thus which is expressed in one language can also be interpreted by another language.
共性论者认为语言的共性确保了可译性的存在，一种语言能够表达的内容另一种语言也一定能够表达；
This tool can also be used to explorer life as you search your soul for the reasons of you existence.
这个工具还可以用来探索人生，在你灵魂深处寻求你活在这个世界的理由。
It also contains the comparison between this design and the testing device which is in existence, and the design is reliable and feasible, and it can be used in the field of mobile testing.
并把本应用与现有的测试设备做了比较，实践证明该设计可靠、可行，可应用于移动测试领域。
If some lists existence sky, be worth that is to say, although be built to this, index also won't improve performance.
也就是说如果某列存在空值，即使对该列建索引也不会提高性能。
In short, the existence of genetic variation, genetic diseases also may not be passed on to future generations, so you do not doubt that there must be a.
总之，基因是存在变异的，遗传性的病症也有可能不遗传给后代，因此您可不必有这样的疑虑了。
The gravity, wave velocity and electrical resistivity changes before and after the earthquake may also be indicative of the deep rock of the existence of structural damage.
地震前后的重力变化和波速变化以及电阻率变化可能也指示了深部岩体的结构损伤的存在。
But altruism, fun, community and curiosity are also parts of human sociality and I propose that the Web is an existence proof that these capabilities can be amplified, as well.
但是，利他主义、享受乐趣、群体归属感和好奇心，同样也是人的社会性组成部分，我认为网络自身足以证明人类的这些行为也将得以放大。
This tool can also be used to explore life as you search your soul for the reasons of your existence.
这个工具还可以用来探索人生，在你灵魂深处寻求你活在这个世上的理由。
Do not trust the reality, but also not to be easily detached from the reality and the realities associated with our existence, we have around the reality of existence.
不要轻易相信现实，也不要轻易脱离现实，现实伴随我们存在，我们又围绕现实存在。
It is found that the chemical stability of the drug carrier can also be increased with the existence of SiO2 shell.
实验中发现通过在药物载体外包裹一层二氧化硅外壳，该药物载体的化学稳定性得到了显著的提高。
Certain mental health problems are also in existence with backward policemen. Conclusion Necessary measures should be adopted, to strengthen the recruitment and selection of psychology w…
结论应当采取必要的措施，加强警察的心理招募和心理筛选工作，强化警察的个性心理素质和心理健康训练。
Certain mental health problems are also in existence with backward policemen. Conclusion Necessary measures should be adopted, to strengthen the recruitment and selection of psychology w…
结论应当采取必要的措施，加强警察的心理招募和心理筛选工作，强化警察的个性心理素质和心理健康训练。
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