可读性较好的正规表达式：regexpbuilderphp

这是PHP移植至 https://github.com/thebinarysearchtree/regexpbuilderjs

RegExpBuilder整合正则表达式至编程语言，从而使它们易于阅读和维护。正则表达式使用链式方法创建。

Examples

use Gherkins\RegExpBuilderPHP;  $builder = new RegExpBuilder();

Validation

$regExp = $builder      ->startOfInput()      ->exactly(4)->digits()      ->then("_")      ->exactly(2)->digits()      ->then("_")      ->min(3)->max(10)->letters()      ->then(".")      ->anyOf(array("png", "jpg", "gif"))      ->endOfInput()      ->getRegExp();    //true  $regExp->test("2020_10_hund.jpg");  $regExp->test("2030_11_katze.png");  $regExp->test("4000_99_maus.gif");    //false  $regExp->test("123_00_nein.gif");  $regExp->test("4000_0_nein.pdf");  $regExp->test("201505_nein.jpg");

Search

$regExp = $builder      ->multiLine()      ->globalMatch()      ->min(1)->max(10)->anythingBut(" ")      ->anyOf(array(".pdf", ".doc"))      ->getRegExp();    $text = <<<EOF  Lorem ipsum dolor sit amet, consetetur sadipscing elitr,  sed diam nonumy SomeFile.pdf eirmod tempor invidunt ut labore et dolore  magna aliquyam erat, sed diam voluptua. At vero eos et accusam  et justo duo dolores et ea rebum. doc_04.pdf Stet clita kasd File.doc.  EOF;    $matches = $regExp->exec($text);    //true  ($matches[0] === "SomeFile.pdf");  ($matches[1] === "doc_04.pdf");  ($matches[2] === "File.doc");