<?php //$lines=file('your.txt'); $lines=[ 'a:849444988- b:10.0', 'a:748449844- b:15.0', 'a:123456789- b:120.0', 'a:940849847- b:20.0', 'a:474844994- b:55.0' ]; usort($lines,function($a,$b){ return strnatcmp( substr($b,strpos($b,'b:')+2) , substr($a,strpos($a,'b:')+2) ); }); echo implode("\n",$lines);
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