In Php I want to show all the elements in an array (meaning the values not the keys) by using for loop.
- How can I do it?
- Which function should I use for $i<=n?
For example I have this array:
$arr = [ 'London', 'Moscow', 'Beijing', 'New York', 'Berlin' ];
There is a special loop for arrays in Php (including for the associative arrays), it is called foreach.
Read MORE HERE
You should use foreach if you want to see the values in associative arrays (and not only for associative arrays
but for simple ones as well) .
Here's an example:
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>PHP - foreach Loop</title>
</head>
<body>
<?php
$names = [
'Alex' => 'Alexi',
'Connor' => 'McGregor',
'Habib' => 'Nurmagomedov',
'John' => 'Cena',
];
foreach ( $names as $name ) {
echo $name . '<br>';
}
?>
</body>
</html>
Also, it is a good practice to name the array in plural and the value in singular.
For example if the array is named $names, the values to be shown (printed) should be named $name.
And this is the code if you want to see the keys and the values:
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>PHP - For Loop</title>
</head>
<body>
<?php
$names = [
'Alex' => 'Alexi',
'Connor' => 'McGregor',
'Habib' => 'Nurmagomedov',
'John' => 'Cena',
];
foreach ( $names as $key => $name ) {
echo "$key $name" . '<br>';
}
?>
</body>
</html>
Also you will freaquntly see this:
foreach ( $arr as $k => $v ) {
echo "$k $v" . '<br>';
}
Where
$k stands for key in the array
and
$v is the value if in the array
You can use count function. (line #3)
Here is only the php code:
$arr = [ 'London', 'Moscow', 'Beijing', 'New York', 'Berlin' ];
for ( $i = 0; $i < count( $arr ); $i++ ) {
echo $arr[ $i ] . '<br>';
}
And the whole code in HTML:
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>PHP show array values with For Loop</title>
</head>
<body>
<?php
$arr = [ 'London', 'Moscow', 'Beijing', 'New York', 'Berlin' ];
for ( $i = 0; $i < count( $arr ); $i++ ) {
echo $arr[ $i ] . '<br>';
}
?>
</body>
</html>
It will work ONLY if your keys are known and in order; For Associative Arrays in PHP - you must use foreach loop: https://www.w3schools.com/php/php_arrays.asp
