php-regexHow to use curly braces in PHP regex?

Curly braces can be used in PHP regex to define a range of characters or numbers. For example, the following code block will match any string that contains a number between 0 and 5:

$regex = '/[0-5]/';

The output of this code will be true if the string contains a number between 0 and 5, and false otherwise.

Code explanation

• [0-5]: This defines the range of characters or numbers that will be matched. In this case, it is any number between 0 and 5.

• /: This is the delimiter that marks the beginning and end of the regex.

• $regex: This is the variable that stores the regex.

Helpful links

• PHP Regex

• Regular Expressions

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