PHP ??
??? ?? ??? ?? ?? ??? ? ????:
????
<?php
$cars=array("Volvo","BMW","Toyota");
echo "I like" . $cars[0] . "," . $cars[1] . "and " . $cars[2] . ".";
?>??? ???
???? ??????
??? ??? ??? ?? ?? ??? ? ?? ?? ?????.
??? ?? ??? ??? ???? ??? ??? ??? ???? PHP ?????? ??? ?????.
?? ??(?: ??? ?? ??)? ?? ?? ??? ?? ?? ??? ?????.
$cars1 = "Volvo"
$cars2 = "BMW";
$cars3 = "Toyota";
??? ??? ???? ?? ??? ???? ??? ?? ???? ??? 3?? ??? ??? 300?? ??? ??? ??? ????
???? ??? ??? ????!
??? ?? ??? ?? ?? ??? ? ??? ?? ???? ?? ?? ?? ???? ? ????.
PHP?? ?? ??
PHP??? array() ??? ???? ??? ?????.
array() ;
PHP 5.4 ???? ?? ???? ?? ???? ??? ? ????. []? ??? ??? ?????.
PHP?? ? ?? ??? ??? ????.
1. ?? ?? - ?? ID ?? ?? ??
2. ?? ?? - ??? ?? ?? ??, ? ? ?? ?????
3. ??? ?? - ?? ??? ??? ???? ??
PHP ?? ??
?? ??? ??? ???? ? ??? ????. >
ID ? ?? ??(ID ?? ?? 0?? ??): $cars=array("Volvo","BMW","Toyota");???? ??? ID ?: $cars1[0] = "??";
$cars2[1] = "BMW";
$cars3[2 ] = "???";
<?php
$cars=array("Volvo","BMW","Toyota");
var_dump($cars); // 可以打印出來看看是什么
echo "I like" . $cars[0] . "," . $cars[1] . "and " . $cars[2] . ".";
?>? ???. ???? ??? ?????. - count() ??
count( ) ??? ???? ?????. ?? ??(?? ?): Instance<?php
$cars=array("Volvo","BMW","Toyota");
echo count($cars);
?>??? ????? ?? ????
?? ??? ?? ?? ???? ?????. ??? ?? for ??? ??? ? ????.?<?php
$cars=array("Volvo","BMW","Toyota");
$arrlength=count($cars);
for($x=0;$x<$arrlength;$x++)
{
echo $cars[$x];
echo "<br>";
}
?>??? ??? for ??? ???? ?? ??? ??? ?????. PHP for ??PHP ?? ?? ?? ??? ??? ??? ??? ?? ???? ?????.
?? ??? ??? ? ?? ??? ??? ????.
$age=array("Peter"=>"35","Ben"=>"37","Joe" = >"43");
??:
$age['Peter']="35"
$age['Ben']="37" ;
$age['Joe']="43";
??? ??? ?? ?????? ??? ? ????:
Instance
<?php
$age=array("Peter"=>"35","Ben"=>"37","Joe"=>"43");
echo "Peter is" . $age['Peter'] . "years old.";
?>??? ???. ?
?? ?? ??? ??? ?????. ???? ??? ???? ?? ?-? ?? ??? ???? ???.
<?php //聲明一下關(guān)聯(lián)數(shù)組 $rela = array( '帥' => '你', '很帥' => '黃曉明', '灰常灰常帥' => '寧澤濤', '有男人味的大叔' => '吳秀波', ); //簡潔聲明 $drink = [ '美' => '鳳姐', '很美' => '芙蓉姐姐', 'verymei' => '楊冪', '心中滴女神呀' => '華妃', 100 => '孫儷', '娘娘', ]; // 輸出 $rela echo '<pre>'; var_dump($rela); echo '</pre>'; // 輸出$drink echo '<pre>'; var_dump($drink); echo '</pre>'; ?>
??? ?? ?? ??? ???? ???????.
array(4)
{
["handsome"]=> ; string(3) "??"
["?? ??????"]=> "????"
["??, ?? ??, ?? ???"]=> ????"
["???? ??"]=> string(9) "???"
}
array(6) {
["美"]=> string(6) "? ??"
["very beautiful"]=> string(12) "?? ??"
["verymei"]=> string(6) "??"
[" ?? in my heart"]=> string(6) "??"
[100]=> string(6) "??"
[101]=> string(6) "??"
}
?? ?? ???? ??? ? ? ????.
?? ??? ? ?? =>
????? ??? ??? ??? ?? ? ?????????? ??? ??? ?? ?? ??? ?? ??? ???? ???? ??? +1 ??? ????. (? ??? ?? Sun Li? Empress? ? ?? ???? ??????.)?? ??? ?? ??
?? ??? ?? ?? ???? ????? ??? ?? foreach ??? ??? ? ????. this: ?<?php
$age=array("Peter"=>"35","Ben"=>"37","Joe"=>"43");
foreach($age as $x=>$x_value)
{
echo "Key=" . $x . ", Value=" . $x_value;
echo "<br>";
}
?>??? ???
?????
?? ?? ??? ?? ??? ?????. ??? ??? ??? ? ????( ; ) ?? ??? ??? ??? ?????.??? ??
??? ??? ?????. ??? ??? PHP ?? ???? ??? ?????. PHP ?? ?? ??? ??
?? ?? ??? ?? ?? ?? ???? ??? PHP ?? ?? ???? ?????.
? ??? ?? ??? ??? ?? ??? ?? ?? ??????!
