Displaying elements of an array by loopingWe can loop through an array to display each element of the
array. This code will display all the element of an array. This is very useful
in many occasions where a list is to be displayed. We will see the application
of this in check box value collection.
First we will create an array and then display each element of it.
Here is the code to create and display the value of
the elements of an array.
$a= array("Three",
"two", "Four", "five","ten");
while (list ($key, $val) = each ($a)) {
echo "$key -> $val
<br>";
}
Using sizeof function to display all elements using for loop
$a= array("Three", "two", "Four", "five","ten");
$max=sizeof($a);
for($i=0; $i<$max; $i++) {
echo "$a[$i] ,";
}
Displaying one element
By using key or by index we can display one element at a time. Here is the code.
$a= array("Three", "two", "Four", "five","ten");
echo $a[2]; // Output is 4
Using Key
$mark=array("John"=>85,"Raju"=>75,"Alex"=>48,"Ronald"=>52);
echo $mark[Alex]; // Output is 48
Using print_r
We can use print_r funciton which returns variables in human readable format. Here is the code.
$a= array("Three", "two", "Four", "five","ten");
print_r($a);
The output of the above code is here.
Array ( [0] => Three [1] => two [2] => Four [3] => five [4] => ten )
Same way here is one more array
$ar=array("FName"=>"John","Address"=>"Streen No 11 ","City"=>"Rain Town","Country"=>"USA");
print_r($ar);
The output is here
Array ( [FName] => John [Address] => Streen No 11 [City] => Rain Town [Country] => USA )
There are other way like using foreach function to display the elements of an array
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| Pankaj | 28-01-2013 |
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how to get only key and key => values of Multidimensional Arrays ?
like this way
1=>a,2=>b,3=>c
answer= 1,2,3
and another one
1-A=>1,2,3
2-B=>1,2
means here a1 is array then A is also array under 1 and 1,3,2 is value of A. so i want this like that way.
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