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PHP处理header修改错误
在PHP开发过程中,常遇到警告:无法修改标头信息——标头已发送的错误提示,提示输出已在指定文件的某行开始。这通常是因为在发送HTTP标头前已有内容被输出,可能源于代码前的空格、字符或此前的echo语句。解决该问题需确保header函数调用前无任何输出 ...
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