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<?php $str = 'plstrim'; $spaces = [ // The horizontal space characters are: "\u{0009}", // Horizontal tab (HT) "\u{0020}", // Space "\u{00A0}", // Non-break space "\u{1680}", // Ogham space mark "\u{180E}", // Mongolian vowel separator "\u{2000}", // En quad "\u{2001}", // Em quad "\u{2002}", // En space "\u{2003}", // Em space "\u{2004}", // Three-per-em space "\u{2005}", // Four-per-em space "\u{2006}", // Six-per-em space "\u{2007}", // Figure space "\u{2008}", // Punctuation space "\u{2009}", // Thin space "\u{200A}", // Hair space "\u{202F}", // Narrow no-break space "\u{205F}", // Medium mathematical space "\u{3000}", // Ideographic space // The vertical space characters are: "\u{000A}", // Linefeed (LF) "\u{000B}", // Vertical tab (VT) "\u{000C}", // Form feed (FF) "\u{000D}", // Carriage return (CR) "\u{0085}", // Next line (NEL) "\u{2028}", // Line separator "\u{2029}" // Paragraph separator ]; foreach($spaces as $s) { $totrim = $str . $s . $s . $s; $trimmed = preg_replace('~\s+$~us', '\1', $totrim); // right-trimming $sname = str_pad(strtoupper(dechex(IntlChar::ord($s))), 4, '0', STR_PAD_LEFT); var_dump([$sname, $totrim, $trimmed]); }
Output for git.master, git.master_jit, rfc.property-hooks
array(3) { [0]=> string(4) "0009" [1]=> string(10) "plstrim " [2]=> string(7) "plstrim" } array(3) { [0]=> string(4) "0020" [1]=> string(10) "plstrim " [2]=> string(7) "plstrim" } array(3) { [0]=> string(4) "00A0" [1]=> string(13) "plstrim   " [2]=> string(7) "plstrim" } array(3) { [0]=> string(4) "1680" [1]=> string(16) "plstrim   " [2]=> string(7) "plstrim" } array(3) { [0]=> string(4) "180E" [1]=> string(16) "plstrim᠎᠎᠎" [2]=> string(7) "plstrim" } array(3) { [0]=> string(4) "2000" [1]=> string(16) "plstrim   " [2]=> string(7) "plstrim" } array(3) { [0]=> string(4) "2001" [1]=> string(16) "plstrim   " [2]=> string(7) "plstrim" } array(3) { [0]=> string(4) "2002" [1]=> string(16) "plstrim   " [2]=> string(7) "plstrim" } array(3) { [0]=> string(4) "2003" [1]=> string(16) "plstrim   " [2]=> string(7) "plstrim" } array(3) { [0]=> string(4) "2004" [1]=> string(16) "plstrim   " [2]=> string(7) "plstrim" } array(3) { [0]=> string(4) "2005" [1]=> string(16) "plstrim   " [2]=> string(7) "plstrim" } array(3) { [0]=> string(4) "2006" [1]=> string(16) "plstrim   " [2]=> string(7) "plstrim" } array(3) { [0]=> string(4) "2007" [1]=> string(16) "plstrim   " [2]=> string(7) "plstrim" } array(3) { [0]=> string(4) "2008" [1]=> string(16) "plstrim   " [2]=> string(7) "plstrim" } array(3) { [0]=> string(4) "2009" [1]=> string(16) "plstrim   " [2]=> string(7) "plstrim" } array(3) { [0]=> string(4) "200A" [1]=> string(16) "plstrim   " [2]=> string(7) "plstrim" } array(3) { [0]=> string(4) "202F" [1]=> string(16) "plstrim   " [2]=> string(7) "plstrim" } array(3) { [0]=> string(4) "205F" [1]=> string(16) "plstrim   " [2]=> string(7) "plstrim" } array(3) { [0]=> string(4) "3000" [1]=> string(16) "plstrim　　　" [2]=> string(7) "plstrim" } array(3) { [0]=> string(4) "000A" [1]=> string(10) "plstrim " [2]=> string(7) "plstrim" } array(3) { [0]=> string(4) "000B" [1]=> string(10) "plstrim " [2]=> string(7) "plstrim" } array(3) { [0]=> string(4) "000C" [1]=> string(10) "plstrim " [2]=> string(7) "plstrim" } array(3) { [0]=> string(4) "000D" [1]=> string(10) "plstrim " [2]=> string(7) "plstrim" } array(3) { [0]=> string(4) "0085" [1]=> string(13) "plstrim………" [2]=> string(7) "plstrim" } array(3) { [0]=> string(4) "2028" [1]=> string(16) "plstrim


" [2]=> string(7) "plstrim" } array(3) { [0]=> string(4) "2029" [1]=> string(16) "plstrim


" [2]=> string(7) "plstrim" }

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