To access an array item, you can refer to the index number for indexed arrays, and the key name for associative arrays.
Access an item by referring to its index number:
$cars = array("Volvo", "BMW", "Toyota");
echo $cars[2];
Note: The first item has index 0.
To access items from an associative array, use the key name: Continue reading PHP Access Arrays
You can create arrays by using the array() function:
$cars = array("Volvo", "BMW", "Toyota");
You can also use a shorter syntax by using the [] brackets:
$cars = ["Volvo", "BMW", "Toyota"];
Associative arrays are arrays that use named keys that you assign to them.
$car = array("brand"=>"Ford", "model"=>"Mustang", "year"=>1964);
var_dump($car);
In indexed arrays each item has an index number.
By default, the first item has index 0, the second item has item 1, etc.
Create and display an indexed array:
$cars = array("Volvo", "BMW", "Toyota");
var_dump($cars);
An array stores multiple values in one single variable:
$cars = array("Volvo", "BMW", "Toyota");
An array is a special variable that can hold many values under a single name, and you can access the values by referring to an index number or name. Continue reading PHP Arrays
The real power of PHP comes from its functions.
PHP has more than 1000 built-in functions, and in addition you can create your own custom functions.
PHP has over 1000 built-in functions that can be called directly, from within a script, to perform a specific task.
Please check out our PHP reference for a complete overview of the PHP built-in functions. Continue reading PHP Functions
The continue statement can be used to jump out of the current iteration of a loop, and continue with the next.
The continue statement stops the current iteration in the for loop and continue with the next.
Move to next iteration if $x = 4:
for ($x = 0; $x < 10; $x++) {
if ($x == 4) {
continue;
}
echo "The number is: $x <br>";
}The break statement can be used to jump out of different kind of loops.
The break statement can be used to jump out of a for loop.
Jump out of the loop when $x is 4:
for ($x = 0; $x < 10; $x++) {
if ($x == 4) {
break;
}
echo "The number is: $x <br>";
}The foreach loop – Loops through a block of code for each element in an array or each property in an object.
The most common use of the foreach loop, is to loop through the items of an array.
Loop through the items of an indexed array:
$colors = array("red", "green", "blue", "yellow");
foreach ($colors as $x) {
echo "$x <br>";
}
For every loop iteration, the value of the current array element is assigned to the variable $x. The iteration continues until it reaches the last array element. Continue reading PHP foreach Loop
The for loop – Loops through a block of code a specified number of times.
The for loop is used when you know how many times the script should run.
for (expression1, expression2, expression3) {
// code block
}
This is how it works: