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3/zend_global_register.md

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@@ -169,3 +169,5 @@ opline = execute_data->opline;
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return;
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```
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这两种处理方式并没有本质上的差异,只是通过全局寄存器变量提升了一些性能。
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> __Note:__ automake编译时的命令是cc,而不是gcc,如果更新gcc后发现PHP仍然没有支持这个特性,请检查下cc是否指向了新的gcc

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