Live Sandbox PHP preg_match() Function
Jump to other PHP functions:
addslashes() - Add backslashes (\) base_convert() - Converts a number between two bases crc32() - Cyclic redundancy checksum crypt() - Calculate the hash of a string decbin() - Convert numbers to binary (base-2) decoct() - Convert numbers to octal (base-8) dechex() - Convert numbers to hexadecimal (base-16) dns_get_record() - Retrieves DNS resource htmlspecialchars() - Convert special characters to HTML entities lcfirst() - Converts first character to lowercase md5() - Calculate MD5 hash of a string openssl_encrypt() - Encrypts plain text data openssl_decrypt() - Decrypts cipher text openssl_get_cipher_methods() - Lists available cipher methods preg_match() - Regular expression (RegEx) match sha1() - Calculate sha1 hash of a string str_word_count() - Determines number of words in a string strlen() - Calculate character length of a string strip_tags() - Removes HTML and PHP tags from a string stripslashes() - Removes backslashes (\) strrev() - Reverses order of a string strtolower() - Convert string to all lowercase strtoupper() - Convert string to all uppercase ucfirst() - Converts first character to uppercase ucwords() - Converts first letter of each word to uppercase urlencode() - Encodes a string for use in URL query urldecode() - Decodes the query part of a URL string.
PHP preg_match() Function
Instructions/Notes

preg_match($pattern, $subject, [, matches [, flags [, offset]]]) - This PHP function performs a regular expression match. This looks at the subject (your string) for a specified pattern. If a match is found, a 1 (true) is returned. Otherwise a 0 (false) is returned. See below for examples.



Result & Lookup History (10 Maximum)
Some Examples
Pattern String Subject String preg_match Result
/An apple is red/ apple A match.
An apple is red/ apple Error. Missing forward slash (/) at the beginning of the pattern.
/An apple is red/ APPLE No match. preg_match is case sensitive.
/An apple is red/i APPLE A match. Add the letter "i" to the end of the pattern string to perform a case-insensitive match.
/Foo/i FOO A match.
/you s[a|4]ve/i you save A match.
/Luxury (?:shopping|timepiece)/i luxury No match.
/Luxury (?:shopping|timepiece)/i luxury timepieces A match.
/% OFF ALL (?:designer|luxury) /i Special 80% off all designer item A match.
/% OFF ALL (?:designer|luxury) /i 10% OFF all luxury watches A match.
/R[o|0]lex (?:w[a|4]tch|timepiece)/i r0lex watch A match.
/R[o|0]lex (?:w[a|4]tch|timepiece)/i Tag Heuer watch No match.
/R[o|0]lex (?:w[a|4]tch|timepiece)/i cheap rolex timepieces A match.
Suggestion

PHP Cookbook: Solutions & Examples

Amazon Reviewer Great help for someone thrown into the fray


Buy from Amazon