| <?php
Print a triangle
For ($i =0 $i <=3; $i + +)
{
for ($j =0; $j <=3-$i; $j + +) {
Echo ' ';
}
for ($k =0; $k <=2* $i; $k + +)
{
echo "*";
}
Echo ' <br> ';
}
?>
<?php
Yang Hui's triangle
For ($i =0 $i <6; $i + +)
{
The first and last are 1.
$a [$i][0]=1;
$a [$i] [$i]=1;
}
For ($i =2 $i <6; $i + +) {
for ($j =1; $j < $i; $j + +)
{
$a [$i] [$j]= $a [$i -1][$i -1]+ $a [$i -1][$j];
}
}
For ($i =0 $i <6; $i + +)
{
for ($j =0; $j <= $i; $j + +) {
echo $a [$i] [$j]. ' ';
}
Echo ' <br/> ';
}
?>
<?php
Merging multiple arrays
function T () {
$c =func_num_args () -1;//returns the number of arguments passed to a function
$a =func_get_args ()//returns an array, including the parameter list of the function
for ($i =0; $i <= $c; $i + +) {
if (Is_array ($a [$i])) {
For ($j =0 $j <count ($a [$i]); $j + +) {
$r []= $a [$i] [$j];
}
}else{
Die (' not a array ');
}
}
return $r;
}
Print_r (t (range (1,4), Range (1,4), Range (1,4));
?>
<?php
Begging cattle
Function Cow ($num, $y)
{
for ($j =1; $j < $y; $j + +)
{
if ($j >=4 && $j <15)
{
$num + +;
Cow ($num, $y-$j);
}
if ($j ==20)
$num –;
}
return $num;
}
Echo Cow (2,2);
?>
<?php
Order lookup (Find an element in an array)
function Seq_sch ($array, $n, $k)//Find an element before a location (excluding the specified location)
{
$array [$n]= $k;
for ($i =0; $i < $n; $i + +)
{
if ($array [$i]== $k)
Break
}
if ($i < $n)
return $i;
Else
return-1;
}
$array =array (' A ', ' B ', ' C ');
Echo Seq_sch ($array, 2, ' B ');
?>
<?php
Function Show ($i)
{
if ($i ==1)
return 1;
Else
return $i *show ($i-1);
}
echo "<br>";
Echo Show (3);
?>
<?php
Peibo that pull out series
Function B ($n)
{
if ($n <2)
return $n;
Else
Return B ($n-1) +show ($n-2);
}
Echo b (2);
?> |
