Soluciones examen

<?php
//1 Muestra 56
//2
$colores=["Rojo","naranja","amarillo","verde","cian","azul","magenta"];

//3
$res=1;
for($i=1;$i<=12;$i++){
$res*=$i;
}
echo $res;

//4

function inicioFin($cadena){
return substr($cadena,0,1)==substr($cadena,-1);
}
//5
function sumaArray($array){
$suma=0;
foreach($array as $v){
$suma+=$v;
}
return $suma;
}
function sumaArrayPro($array){
return array_sum($array);
}
//6
function invertirCad($array){
$res=[];
foreach($array as $v){
$res[]= strrev($v);
}
return $res;
}

//7
function arrayAleatorio($tam,$min,$max){
$res=[];
for($i=0;$i<$tam;$i++){
$res[]=mt_rand($min,$max);
}
return $res;
}

//8
function finde(){
return date("w")==0 || date("w")==6;
}

//9
function quitar($cadena,$letras){
$cadena= utf8_encode($cadena);
for($i=0;$i<strlen($letras);$i++){
$cadena=
str_replace(substr($letras,$i,1), "", $cadena);
}
return utf8_decode($cadena);
}
function contarConsonantes($cadena){
$cadena= strtolower($cadena);
$c=quitar($cadena,"bcdfghjklmnñpqrstvwxyz");
return strlen($cadena)-strlen($c);
}

function masConsonantes($a,$b){
if (contarConsonantes($a)> contarConsonantes($b)){
return $a;
} else {
return $b;
}
}