checking if a string has special characters
124479
Check if a String contains a special character
120682
How do I verify that a string only contains letters, numbers, underscores and dashes?
120134
List of all special characters that need to be escaped in a regex
43339
Regular expression to match non-ASCII characters?
2559
Is there a regular expression to detect a valid regular expression?
106006
Special characters
31087
How to check if a string contains a substring in Bash
81731
How to check if a string starts with a specified string?
103770
How can I escape special HTML characters in JSP?
3265
How can I test if a variable is empty or contains only spaces?
141442
Why does my string comparison fail?
82011
Check a string to see if all characters are hexadecimal values
47715
How to check if the URL contains a given string?
60608
Test whether string is a valid integer
43927
How to check that a string is a palindrome using regular expressions?
133249
Parse XML special characters?
14800
How do I check if a string contains a specific word?