$re = '/uk\.co\.autotrader:autotrader-spring-boot-?.*:\"?\${?\K[a-zA-Z-]*/m';
$str = 'uk.co.autotrader:autotrader-spring-boot-dependencies:${autotraderSpringbootVersion}
uk.co.autotrader:autotrader-spring-boot-dependencies:"$autotraderSpringbootVersion"
uk.co.autotrader:autotrader-spring-boot-dependencies:$autotraderSpringbootVersion
uk.co.autotrader:autotrader-spring-boot-dependencies:$someothername
uk.co.autotrader:autotrader-spring-boot-dependencies:2.3.0.1
uk.co.autotrader:autotrader-spring-boot:${autotraderSpringbootVersion}
uk.co.autotrader:autotrader-spring-boot:"$autotraderSpringbootVersion"
uk.co.autotrader:autotrader-spring-boot:$autotraderSpringbootVersion
"uk.co.autotrader:autotrader-spring-boot-dependencies:${autotraderSpringbootVersion}"
uk.co.autotrader:autotrader-spring-boot:2.3.0.1
(regex to find match upto dollar working)
uk.co.autotrader:autotrader-spring-boot.*:\\"?\\$
$
"$
"${
${
\\$\\"?\\{?
(regex to find match of text following dollar sign)
uk.co.autotrader:autotrader-spring-boot(\\$\\"?\\{?)[a-zA-Z]*
uk\\.co\\.autotrader:autotrader-spring-boot:(?=[\\$\\"?\\{?])[a-zA-Z-]*';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($matches);
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php