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11 Cards in this Set
- Front
- Back
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.
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Matches any character, except for line breaks if dotall is false
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*
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Matches 0 or more of the preceding character
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+
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Matches 1 or more of the preceding character
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?
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Preceding character is optional. Matches 0 or 1 occurrence
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\d
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Matches any single digit
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\w
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Matches any word character (alphanumeric & underscore)
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[XYZ]
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Matches any single character from the character class
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[XYZ]+
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Matches one or more of any of the characters in the set
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$
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Matches the end of the string
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^
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Matches the beginning of a string
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[^a-z]
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When inside of a character class, the the ^ means NOT; in this case, match anything that is NOT a lowercase letter
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