$re = ['/foo bar/', '#foo bar#imsx', '/foo bar']; foreach ($re as $item) { echo "Regex::IsRegex ( {$item} ) = " . (Regex::IsRegex($item) ? 'true' : 'false') . $eol; } echo $eol; // Matches() example $matches = [['file.txt', '*.txt'], ['file.txt', 'file.*'], ['dir/file.txt', '*.txt'], ['dir/file.txt', 'dir/*.txt'], ['dir/file.txt', '*/*.txt'], ['dir/file.txt', '*\\file.txt']]; foreach ($matches as $match) { echo "Regex::Matches ( {$match[0]}, {$match[1]} ) = " . (Regex::Matches($match[0], $match[1]) ? 'true' : 'false') . $eol; } echo $eol; // DevelopExpression() example $expressions = ['file[0-9].txt', 'file[a-c][0-2].bin']; foreach ($expressions as $expression) { echo "Regex::DevelopExpression ( {$expression} ) = {$eol}{$tab}"; $developed_expressions = Regex::DevelopExpression($expression); echo rtrim(str_replace("\n", "{$eol}{$tab}", print_r($developed_expressions, true))); echo "{$eol}"; } echo $eol; // PregMatchEx() example $subject = "a:1 b:2"; $re = '/(?P<sequence> (?P<letter> [a-z]) : (?P<digit> [0-9])) \\s (?P<sequence> (?P<letter> [a-z]) : (?P<digit> [0-9]))/imsx'; echo "Regex::PregMatchEx ( {$subject}, {$re}, WIPE ) : "; $result = Regex::PregMatchEx($re, $subject, $match, PREG_WIPE_MATCHES | PREG_OFFSET_CAPTURE); echo "\t" . str_replace("\n", "{$eol}{$tab}", print_r($match, true)); echo $eol; echo "Regex::PregMatchEx ( {$subject}, {$re}, NOWIPE ) : "; $result = Regex::PregMatchEx($re, $subject, $match, PREG_OFFSET_CAPTURE); echo "\t" . str_replace("\n", "{$eol}{$tab}", print_r($match, true)); echo $eol;