PHP regex – match any digit
Php regex can use digit shorthand (\d) to match a digit (0-9). To match any non digit character, regex shorthand \D (uppercase backslash D) can read more
PHP regex – match word character (letter, number or underscore)
Php regex can use word shorthand \w (lowercase backslash w) to match a word character. It matches with any of the following: letters (a-z,A-Z) Numbers read more
PHP regex – word boundary examples
Php regex can use word boundary character (\b) to match a word boundary. Beginning of string if following by a word character will also match read more
PHP – Regex OR (alternation) examples using pipe
Regex OR (alternation) in php can be matched using pipe (|) match character. This is very frequently used in regular expressions. Following are some ways read more
Php regex delimiter examples
PHP requires regex patterns to have valid delimiters around it. Some languages may not require delimiters (e.g. python). To make code more readable, sometimes we read more
Php look ahead and look behind regex examples
Look ahead and look behind can be very useful to match a pattern which is followed, not followed, preceded or preceded by a certain pattern. read more
php preg_match – greedy and lazy regex examples
Php preg_match (preg_replace) can have greedy (default) or lazy regular expressions. Lazy match is done as soon as a valid match is found. Greedy match read more