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==An array called $computers with numeric and string keys==



<source lang="html4strict">

<?
$computers["t"] = "A";
$computers[2] = "B";
$computers["A"] = "C";
?>

</source>

==An array called $vegetables with string keys==



<source lang="html4strict">

<?
$vegetables["corn"] = "yellow";
$vegetables["beet"] = "red";
$vegetables["carrot"] = "orange";
?>

</source>

==Argument Swapping==



<source lang="html4strict">

<?php
$dates = array(
array( "mon"=> 12, "mday"=>25, "year"=>2001 ),
array( "mon"=> 5, "mday"=>23, "year"=>2000 ),
array( "mon"=> 10, "mday"=>29, "year"=>2001 )
);
$format = include ("local_format.php");
foreach ($dates as $date) {
printf( "$format", $date["mon"], $date["mday"], $date["year"] );
}
?>

</source>

==array_intersect_assoc: Computes the intersection of arrays with additional index check==



<source lang="html4strict">

<?php
$array1 = array("OH" => "Ohio", "CA" => "California", "HI" => "Hawaii");
$array2 = array("50" => "Hawaii", "CA" => "California", "OH" => "Ohio");
$array3 = array("TX" => "Texas", "MD" => "Maryland", "OH" => "Ohio");
$intersection = array_intersect_assoc($array1, $array2, $array3);
print_r($intersection);
?>

</source>

==array_key_exists==



<source lang="html4strict">
<?php
$state["Delaware"] = "December 7, 1787";
$state["Pennsylvania"] = "December 12, 1787";
$state["Ohio"] = "March 1, 1803";
if (array_key_exists("Ohio", $state)) echo "Ohio joined the Union on $state[Ohio]";
?>

</source>

==array_keys: Return all the keys of an array==



<source lang="html4strict">
<?php
$state["Delaware"] = "December 7, 1787";
$state["Pennsylvania"] = "December 12, 1787";
$state["New Jersey"] = "December 18, 1787";
$keys = array_keys($state);
print_r($keys);
// Array ( [0] => Delaware [1] => Pennsylvania [2] => New Jersey )
?>

</source>

==Arrays Using Associative Array Notation==



<source lang="html4strict">
<html>
<head>
<title>Associative Array Notation</title>
</head>
<body>
<?php
$cars = array(
"1" => array ("A", "B", "C"),
"2" => array ("D", "E", "F", "G"),
"3" => array ("H", "I")
);
ob_start();
var_dump($cars);
$cars_var_dump = ob_get_contents();
ob_end_clean();

print("<pre>" . $cars_var_dump . "</pre>");
?>
</body>
</html>

</source>

==Array to object==



<source lang="html4strict">

<?php
$arr = array(
"abc" => "abc",
"def" => 123.5,
"ghi" => array(1,2,3),
0 => "def"
);
$key = "abc";
$obj = (object) $arr;
echo "First value = $obj->abc\n";
echo "Second value = $obj->def\n";
echo "Third value = $obj->ghi\n";
?>

</source>

==array_values: Return all the values of an array==



<source lang="html4strict">
<?php
$population = array("Ohio" => "11,421,267", "Iowa" => "2,936,760");
$popvalues = array_values($population);
print_r($popvalues);
// Array ( [0] => 11,421,267 [1] => 2,936,760 )
?>

</source>

==Assigning and Comparing==



<source lang="html4strict">

<?php
$a = array(0=>1,2=>"orange","id"=>7,"name"=>"John" );
print_r($a);
?>

</source>

==Associative Arrays==



<source lang="html4strict">
<?php
$emp_det [Name] = "Name";
$emp_det [Age] = "2";
$emp_det [Code] = "8";
$emp_det [Designation] = "System Administrator";

echo $emp_det[Name];
$emp_det = array (Name => "Name", Age => "24", Code => "System Administrator");
echo $emp_det[Name];
?>

</source>

==Building an array of defaults==



<source lang="html4strict">

if ($_POST["_submit_check"]) {
$defaults = $_POST;
} else {
$defaults = array("delivery" => "yes",
"size" => "medium",
"main_dish" => array("taro","tripe"),
"sweet" => "cake");
}

</source>

==Creates an array that assigns keys 1 through 7 to the days of the week.==



<source lang="html4strict">

<?
$days = array(1=>"Sunday", "Monday", "Tuesday","Wednesday", "Thursday", "Friday", "Saturday");
?>

</source>

==Creates an array with keys "a", "b" and "c with values of 1, 2 and 3 as well as keys 0, 1 and 2 with values "a", "b", and "c"==



<source lang="html4strict">

<?
$myarray = array("a"=>1, "a", "b"=>2, "b", "c"=>3, "c");
?>

</source>

==Creating an associative array of shapes==



<source lang="html4strict">

<?php
$shapes = array("S" => "Cylinder",
"N" => "Rectangle",
"A" => "Sphere",
"O" => "Sphere",
"P" => "Rectangle");
?>

</source>

==Creating Arrays==



<source lang="html4strict">

<?php
$my_array = array();
$pets = array("A", "S", "B", "W");
$person = array("B", "J", 24, "CA");
$customer = array("first" => "Bill", "last" => "Jones","age" => 24, "state" => "CA");
print "Pet number 1 is named "$pets[0]".\n";
print "The person"s age is $person[2].\n";
print "The customer"s age is {$customer["age"]}.\n";
?>

</source>

==Displaying one value from an array==



<source lang="html4strict">

<?php
$shapes = array("S" => "Cylinder",
"N" => "Rectangle",
"A" => "Sphere",
"O" => "Sphere",
"P" => "Rectangle");
print "A notepad is a {$shapes["Notepad"]}.";
?>

</source>

==foreach statement is used to loop through an associative array==



<source lang="html4strict">

<?php
$emp_det = array (Name => "A",
Age => "2" ,
Code =>"8",
Designation => "Administrator");
foreach ($emp_det as $key=>$temp) {
echo "$key = $temp","\n";
}
?>

</source>

==key: Fetch a key from an associative array==



<source lang="html4strict">

<?php
$capitals = array("Ohio" => "Columbus", "Iowa" => "Des Moines","Arizona" => "Phoenix");
echo "Can you name the capitals of these states?";
while($key = key($capitals)) {
echo $key." ";
next($capitals);
}
?>

</source>

==Looping Through an Associative Array with foreach==



<source lang="html4strict">
<html>
<head>
<title>Looping Through an Associative Array with foreach</title>
</head>
<body>
<?php
$character = array (name=>"Joe",
occupation=>"Programmer",
age=>30,
"Learned language "=>"Java"
);
foreach ( $character as $key=>$val ){
print "$key = $val ";
}
?>
</body>
</html>

</source>

==Obtaining Array Keys and Values==



<source lang="html4strict">

<?php
function array_display($array, $pre=FALSE){
$tag = $pre ? "pre" : "p";
printf("<%s>%s</%s>\n", $tag, var_export($array, TRUE), $tag);
}
$fruits = array("red" => "apple", "yellow" => "banana", "green" => "lime");
$colors = array_keys($fruits);
$flavors = array_values($fruits);

array_display($fruits);
array_display($colors);
array_display($flavors);
?>

</source>

==Obtaining Array Keys with a Given Value==



<source lang="html4strict">

<?php
$countries = array( "USA" => "English", "Spain" => "Spanish",
"France" => "French", "Argentina" => "Spanish");

function array_get_keys($search, $array)
{
$keys = array();

foreach($array as $key => $value)
if($value == $search)
$keys[] = $key;

if(count($keys) == 0)
$keys = FALSE;

return $keys;
}

$language = "Spanish";
$spoken = array_get_keys($language, $countries);

printf("Countries where %s is spoken: %s.\n",
$language,
$spoken ? implode(", ", $spoken) : "None");

$language = "Tagalog";
$spoken = array_get_keys($language, $countries);

printf("Countries where %s is spoken: %s.\n",
$language,
$spoken ? implode(", ", $spoken) : "None");
?>

</source>

==One-based array index==



<source lang="html4strict">

<html>
<head>
<title>One-based array index</title>
</head>
<body>
<ol>
<?php
$arr = array( 1 => "1st", "2nd", "3rd", "4th", "5th" );

for( $i = 1; $i <= sizeof($arr); $i++ )
{
echo("Position $i - Element value: $arr[$i] ");
}
?>
</ol>
</body>
</html>

</source>

==print_r: output associate array==



<source lang="html4strict">
<?php
$states = array (
"Ohio" => array ("population" => "11,353,140", capital => "Columbus"),
"Nebraska" => array("population" => "1,711,263", capital => "Omaha")
)
print_r($states);
?>

</source>

==Reference the assiciate array element==



<source lang="html4strict">
<?
$birthdays["K"] = "1988-04-12";
$birthdays["S"] = "1986-05-16";
$birthdays["D"] = "1983-02-09";
echo("My birthday is: " . $birthdays["K"]);
?>

</source>

==Sort associate array==



<source lang="html4strict">
<?php
$states = array("OH" => "Ohio", "CA" => "California", "MD" => "Maryland");
sort($states);
print_r($states);
?>

</source>

==Use foreach, while and list to loop through associate array==



<source lang="html4strict">

<?php
$characters = array(
array(
"name" => "A",
"occupation" => "A1",
"age" => 30,
"special power" => "A3"
),
array(
"name" => "B",
"occupation" => "B1",
"age" => 24,
"special power" => "B2"
),
array(
"name" => "C",
"occupation" => "C1",
"age" => 45,
"special power" => "C2"
)
);
foreach ($characters as $c) {
while (list($k, $v) = each ($c)) {
echo "$k ... $v ";
}
}
?>

</source>

==Using both the array key and a passed-in value to modify each element value==



<source lang="html4strict">

<?php
function change(&$element, $key, $mark) {
$element = "$mark$key$mark, the $element";
}

$dogs = array("A" => "C", "B" => "D", "X" => "Z");
array_display($dogs, TRUE);
array_walk($dogs, "change", "*");
array_display($dogs, TRUE);
?>

</source>

==Using Variable Variables to Create Associations==



<source lang="html4strict">

<?php
$favorite_color = "blue";
$favorite_weapon = "gun";
$favorite_drink = "beer";
$favorite_things = array("color", "weapon", "drink");
foreach ($favorite_things as $thing) {
echo "", $thing, " = ", ${"favorite_{$thing}"}, "";
}
?>

</source>

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в 10:37, 26 мая 2010

Admin: 1 версия