PHP array() Function
Example
Create an indexed array named $cars, assign three elements to it, and then print a text containing the array values:
<?php
$cars=array("Volvo","BMW","Toyota");
echo "I like " . $cars[0] . ", " . $cars[1] . " and " . $cars[2] . ".";
?>
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Definition and Usage
The array() function is used to create an array.
In PHP, there are three types of arrays:
- Indexed arrays - Arrays with numeric index
- Associative arrays - Arrays with named keys
- Multidimensional arrays - Arrays containing one or more arrays
Syntax
Syntax for indexed arrays:
array(value1,value2,value3,etc.);
Syntax for associative arrays:
array(key=>value,key=>value,key=>value,etc.);
| Parameter | Description |
|---|---|
| key | Specifies the key (numeric or string) |
| value | Specifies the value |
Technical Details
| Return Value: | Returns an array of the parameters |
|---|---|
| PHP Version: | 4+ |
| Changelog: | As of PHP 5.4, it is possible to use a short array syntax, which
replaces array() with []. E.g. $cars=["Volvo","BMW"]; instead of $cars=array("Volvo","BMW"); |
More Examples
Example 1
Create an associative array named $age:
<?php
$age=array("Peter"=>"35","Ben"=>"37","Joe"=>"43");
echo "Peter is " .
$age['Peter'] . " years old.";
?>
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Example 2
Loop through and print all the values of an indexed array:
<?php
$cars=array("Volvo","BMW","Toyota");
$arrlength=count($cars);
for($x=0;$x<$arrlength;$x++)
{
echo $cars[$x];
echo "<br>";
}
?>
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Example 3
Loop through and print all the values of an associative array:
<?php
$age=array("Peter"=>"35","Ben"=>"37","Joe"=>"43");
foreach($age as $x=>$x_value)
{
echo "Key=" . $x .
", Value=" . $x_value;
echo "<br>";
}
?>
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Example 4
Create a multidimensional array:
<?php
// A two-dimensional array:
$cars=array
(
array("Volvo",100,96),
array("BMW",60,59),
array("Toyota",110,100)
);
?>
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PHP Array Reference
