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php中性能相关的一部分注意要点

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Release： 2016-06-13 11:41:38
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php中性能相关的部分注意要点

（1） array_merge 的使用要慎重，如果可以用其他方法搞定，就别用这个。尤其在数组长度长，数据量大的时候，性能急剧下降。

（2）正则表达式，如preg_replace 使用要慎重，如果能用php的str_replace 代替，性能效果会很好

Related labels：
array merge php replace
source：php.cn
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