php 随机生成颜色（入门级示例）

functionrandomColor() {$str= ‘#‘;for($i= 0 ;$i< 6 ;$i ) {$randNum= rand(0 , 15);switch($randNum) {case10:$randNum= ‘A‘;break;case11:$randNum= ‘B‘;break;case12:$randNum= ‘C‘;break;case13:$randNum= ‘D‘;break;case14:$randNum= ‘E‘;break;case15:$randNum= ‘F‘;break;}$str.=$randNum;}return$str;}$color= randomColor();