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Reordering
| strrev($s) | returns a string that is $s reversed. |
| str_repeat($s,$i) | returns a string that is $s repeated $i times. |
| str_pad($s1,$i1[,$s2=” “, [$i2=STR_PAD_RIGHT]]) | returns a string that is $s1 padded with $s2 to the length $i1. $i2 can be STR_PAD_RIGHT, STR_PAD_LEFT, or STR_PAD_BOTH. |
| str_shuffle($s) | returns a string that is $s randomly shuffled. |