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$options
= 0 [, int $limit
= 0 ]] )array debug_backtrace ([ int $options
= DEBUG_BACKTRACE_PROVIDE_OBJECT [, int $limit
= 0 ]] )
void debug_zval_dump ( mixed $variable
[, mixed $...
] )
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原文地址:http://www.cnblogs.com/Alight/p/4566717.html