PatternSyntaxExceptionClass - Indicates syntax error in a regular expression pattern ExampleGet your own Java Server Find out if there are any occurrences of the word "w3schools" in a sentence: importjava.util.regex.Matcher;importjava.util.regex.Pattern;publicclassMain{publicstaticvoidmain(String[]...
Use a regular expression to do a case-insensitive search for "w3schools" in a string: $str = "Visit W3Schools"; $pattern = "/w3schools/i"; echo preg_match($pattern, $str); Try it Yourself » Using preg_match_all()The preg_match_all() function will tell you how many matches ...
pcre.jit"1"When set to "1" this enables PCRE's (Perl-Compatible Regular Expressions) just-in-time compilation. (available since PHP 7.0)PHP_INI_ALL PHP Regular Expression Functions FunctionDescription preg_filter()Returns a string or an array with pattern matches replaced, but only if matches...