backend PHP sends the submitted data to Filter
submit data: "> < script > alert ("1") < / script >
Filter (equivalent to conversion via htmlspecialchars): "> < script > alert ("1") < / script >
name varchar (255)
description text
prompt: Error: Duplicate entry"> < script > alert ("1") < / script > "for key" name"
name is the primary key?
means there is data
check the table index:
show index from your_table_name
mainly depends on whether the Non_ Unique value is 0
NAME to cause it is possible that these two fields have a unique index that caused the insertion failure. Take a look at the index
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