| 1. | Capturing with nested parentheses | | |
| 2. | Capturing with preg_match() | | |
| 3. | Check quotes in a file | | |
| 4. | Combine patterns with the pipe (|) character to create branches | | |
| 5. | Checking the syntax of an e-mail address | | |
| 6. | preg_match | | |
| 7. | preg_match( ) calls and what they match | | |
| 8. | preg_match() function returns true if pattern exists, and false otherwise. | | |
| 9. | Matching Patterns with preg_match() | | |
| 10. | Matching with preg_match() | | |
| 11. | PREG_OFFSET_CAPTURE and preg_match() | | |
| 12. | Using preg_match to return an array of matches that start with ple | | |
| 13. | Detecting ZIP Codes in Strings | | |
| 14. | Looking for any lowercase alphabetical character or the numbers 3, 4, and 7 | | |
| 15. | Efficiently finding lines that match a pattern | | |
| 16. | Find the first "p" string and match as many characters as possible until the last possible "t" is reached. | | |
| 17. | Finding All Matching Lines in a File | | |
| 18. | Finding Lines with an Odd Number of Quotes | | |
| 19. | Finding Repeated Words | | |
| 20. | Finding Words Not Followed by Other Words | | |
| 21. | Finding the nth Occurrence of a Match | | |
| 22. | Get the start and end of the string when m is enabled, you should use \A and \z, like this: | | |
| 23. | Negate the characters in the character class | | |
| 24. | Parsing a date with a regular expression | | |
| 25. | Words and Whitespace Regexps | | |
| 26. | i renders the regular expression non case sensitive | | |
| 27. | s modifier: use . to match characters across multiple lines. | | |
| 28. | Regular expressions using +, *, and ? | | |
| 29. | Regular expressions using braces | | |
| 30. | Put the word boundary character to the test | | |
| 31. | Validating numbers with regular expressions | | |
| 32. | Use regular expression to check each line of the code | | |
| 33. | Testing the Complexity of Passwords | | |