PHP怎么创建文件并且写入文字

function mkless($width, $height) {  $r[] = '@import "shiying";';  $r[] = sprintf('@screen_width:%spx;', $width);  $r[] = sprintf('@screen_height:$spx;', $height);  file_put_contents("s$width$height.less", join(PHP_EOL, $r));}

function mkless($width, $height) {  $r[] = '@import "shiying";';  $r[] = sprintf('@screen_width:%spx;', $width);  $r[] = sprintf('@screen_height:$spx;', $height);  file_put_contents("s$width$height.less", join(PHP_EOL, $r);}

$filename='s100300.less';$date='@import "shiying";@screen_width:100px;@screen_height:300px;';file_put_contents($filename,$date);