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<?php $match = '/^@function\s+([_\-\w]+)\s*(?:\((.*?)\))?\s*$/im'; $content = <<<EOF @function set-color($bg-color: #fff, $contrast: 50%, $desaturate: 100%) { @if lightness($bg-color) < 50 { / light color on dark bg / @return desaturate(lighten($bg-color, $contrast), $desaturate); } @else { / dark color on light bg / @return desaturate(darken($bg-color, $contrast), $desaturate); } } EOF; preg_match($match, $content, $matches); var_dump($matches);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $bg in /in/rtWB1 on line 6 Warning: Undefined variable $contrast in /in/rtWB1 on line 6 Warning: Undefined variable $desaturate in /in/rtWB1 on line 6 Warning: Undefined variable $bg in /in/rtWB1 on line 7 Warning: Undefined variable $bg in /in/rtWB1 on line 9 Warning: Undefined variable $contrast in /in/rtWB1 on line 9 Warning: Undefined variable $desaturate in /in/rtWB1 on line 9 Warning: Undefined variable $bg in /in/rtWB1 on line 12 Warning: Undefined variable $contrast in /in/rtWB1 on line 12 Warning: Undefined variable $desaturate in /in/rtWB1 on line 12 array(0) { }

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