The php regular expression cannot end with abc or xyz.

Source: Internet
Author: User
The php regular expression cannot end with a single string abc or xyz. If it is a single string, it cannot end with a string abc: ([^ abc] $ I? Evaluate the php regular expression. It cannot end with a string abc or xyz.
If it is a single string, it cannot end with a string abc: ([^ Abc] $/I)Right?

Reply content:

Evaluate the php regular expression. It cannot end with a string abc or xyz.
If it is a single string, it cannot end with a string abc:([^ Abc] $/I)Right?

/^ (?!. * Abc $ )(?!. * Xyz $ )/

[]This structure means that the elements in it are all small branches.
So what the subject says
[^ Abc] $/IIs not strict,
For example,

/[^ Abc] $/I. test ("xxxab"); // false you actually want to get true

/.*? [^ (Abc | xyz)] $/I

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