Regex: Difference between revisions
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=Examples= |
=Examples= |
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==IP Addresses== |
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1. To Match upto 999.999.999.999: |
1. To Match upto 999.999.999.999: |
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\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\b |
\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\b |
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\b(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\b |
\b(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\b |
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==For Credit Card numbers== |
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1. Visa card numbers start with a 4. New cards have 16 digits. Old cards have 13: |
1. Visa card numbers start with a 4. New cards have 16 digits. Old cards have 13: |
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^4[0-9]{12}(?:[0-9]{3})?$ |
^4[0-9]{12}(?:[0-9]{3})?$ |
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2. MasterCard numbers start with the numbers 51 through 55. All have 16 digits: |
2. MasterCard numbers start with the numbers 51 through 55. All have 16 digits: |
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^5[1-5][0-9]{14}$ |
^5[1-5][0-9]{14}$ |
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