Refer to Bugku’s contradiction question
link: bugku contradiction problem solving
audit code
1. Use GET to transmit parameters
2. a=0 and a is true (0 is false) 3.
b cannot be a number and b is greater than 1234
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Offensive and defensive world-simple_php-weak type
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Origin blog.csdn.net/m0_51641607/article/details/113879438
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