PHP Regular expression - Exercises, Practice, Solution
This resource offers a total of 35 PHP Regular expression problems for practice. It includes 7 main exercises, each accompanied by solutions, detailed explanations, and four related problems.
[An Editor is available at the bottom of the page to write and execute the scripts.]
1. Check if a string contains another string
Write a PHP script that checks if a string contains another string.
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2. Remove the last word from a string
Write a PHP script that removes the last word from a string.
Sample string : 'The quick brown fox'
Expected Output : The quick brown
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3. Remove whitespaces from a string
Write a PHP script that removes the whitespaces from a string.
Sample string : 'The quick " " brown fox'
Expected Output : Thequick""brownfox
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4. Remove nonnumeric characters except comma and dot
Write a PHP script to remove nonnumeric characters except comma and dot.
Sample string : '123,34ドル.00A'
Expected Output : 12,334.00
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5. Remove new lines (characters) from a string
Write a PHP script to remove new lines (characters) from a string.Sample strings : "Twinkle, twinkle, little star,\nHow I wonder what you are.\nUp above the world so high,\nLike a diamond in the sky.";
Expected Output : "Twinkle, twinkle, little star, How I wonder what you are. Up above the world so high, Like a diamond in the sky."
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6. Extract text (within parenthesis) from a string
Write a PHP script to extract text (within parenthesis) from a string.
Sample strings : 'The quick brown [fox].'
Expected Output : 'fox'
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7. Remove all characters from a string except a-z A-Z 0-9 or " "
Write a PHP script to remove all characters from a string except a-z A-Z 0-9 or " ".
Sample string : abcde$ddfd @abcd )der]
Expected Result : abcdeddfd abcd der
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PHP Code Editor:
More to Come !
Do not submit any solution of the above exercises at here, if you want to contribute go to the appropriate exercise page.