I am trying to write my below code using foreach statement in PHP. I just started with PHP so still learning.
$myarray = array ("Hello World", "Hello Tree", "Hello, Proc!");
for($i = 0; $i < count($myarray); $i++) {
$myarray[$i] .= " ($i)";
}
How can I do this?
$myarray = array ("Hello World", "Hello Tree", "Hello, Proc!");
foreach($myarray as $key => &$item) {
$item .= " ($key)";
}
&$item makes the $item a pointer instead of a copy of the array item. So any changes you make to $item will be reflected in the original. $key is equivalent to your array index counter $i. See the foreach reference for more information.
$myarray = array ("Hello World", "Hello Tree", "Hello, Proc!");
$i = 0;
foreach($myarray as $arrayElement) {
$i++; //Foreach item in the array it adds 1 to the variable i.
$myarray[$i] = " $i"; //it sets the element[i] to the value of i
echo $myarray[$i]; //it displays your array on the screen
}
This the the long way (but easy in my opinion) to do it, I don't recommend this way(use $key) but you can use it to store everything in a variable to know what your doing until you really understand the loop.
If you replace your FOR-loop with a FOREACH-loop, it would look like this :
$myarray = array ("Hello World", "Hello Tree", "Hello, Proc!");
foreach ($myarray as $key => $value) {
$myarray[$key] .= " ($key)";
}
For more info on foreach, take a look at the official documentation.
Here is what you want .
$myarray = array ("Hello World", "Hello Tree", "Hello, Proc!");
foreach($myarray as $key => $value) {
$myarray[$key].= " ($key)";
}
Explaination :
$key is equivalent your array index counter $i and $value is the value of array $myarray. For more information you can see this
