解析php中eclipse 用空格替换 tab键
本人用eclipse进行PHP项目开发，根据公司开发规范，要用4个空格替换掉tab键，在网上搜了好多，都不太全面，现在将详细的配置陈列如下：
首先进入首选项：窗口(windows)->首选项(preferences...)
1. windows=》preferences=》general=》editors=》text editors 勾选 “insert spaces for tabs”
2. windows=》preferences=》phpeclipse=》php=》typing 勾选 “insert spaces for tabs（……）”
至此，配置完毕。
但是因为版本的不同，有些会出现这样的问题：if{ 然后按enter键换行，会自动缩进一个tab 而这个tab并没有正确的被用4个空格替换，解决办法
进入：windows=》preferences=》phpeclipse=》php=》formatter =>style 看选项 “indentation is represented by a tab” 是否选中 （默认选中） ，如果选中，则不选该选项，如果没有选中，则选中该选项 ，重启eclipse 会发现设置成功
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