给数字后面添加 “th, st, nd, rd, th” 等符号. 例如: 10 to 10th.
<?php function ordinal($cdnl){ $test_c = abs($cdnl) % 10; $ext = ((abs($cdnl) %100 < 21 && abs($cdnl) %100 > 4) ? 'th' : (($test_c < 4) ? ($test_c < 3) ? ($test_c < 2) ? ($test_c < 1) ? 'th' : 'st' : 'nd' : 'rd' : 'th')); return $cdnl.$ext; } for($i=1;$i<100;$i++){ echo ordinal($i).'<br>'; } ?>