博客

<?php


$arr=array(

“张三”

,

“李四”

,

“王五”

,

“马六”

);



foreach

($arr

as

$value)


echo $value.'<br/>’;


?>

<?php

$arr=array(‘chinese’=>130,’math’=>140,’english’=>135,’computer’=>130);

foreach($arr as $key=>$value)

echo $key.’:’.$value.'<br/>’;

?>

<?php

$arr=array(1,2,3,4);

foreach($arr as $value)

$value*=2;//其实改变的是副本对原数组没有影响

print_r($arr);//Array ( [0] => 1 [1] => 2 [2] => 3 [3] => 4 )

?>

<?php


$arr=array(1,2,3,4);



foreach

($arr

as

&$value)


$value*=2;


print_r($arr);//Array ( [0] => 2 [1] => 4 [2] => 6 [3] => 8 )


?>

<?php


$arr=array(1,2,3,4,5);



for

($i=0;$i<count($arr);$i++)


echo $arr[$i].'<br/>’;


?>

<?php


$arr = array(

“张三”

,

“李四”

,

“王五”

);


$bar = each($arr);


print_r($bar);//Array ( [1] => 张三 [value] => 张三 [0] => 0 [key] => 0 )


?>

<?php


$arr = array(

“张三”

,

“李四”

,

“王五”

);


list($a[0], $a[1], $a[2]) = $arr;


print_r($a);

//Array ( [2] => 王五 [1] => 李四 [0] => 张三 )



?>

<?php


$arr = array(

“张三”

=>20,

“李四”

=>29,

“王五”

=>23);



while

(list($key, $value) = each($arr))


echo

“$key=>$value”

.'<br/>’;


?>

<?php


$arr = array(

“张三”

,’b’=>

“李四”

,

“王五”

);


list($a[0], $a[1]) = $arr;


print_r($a);

//Array ( [1] => 王五 [0] => 张三 )



?>

<?php


$a = array();


$a[‘山东’][0] =

“济南”

;


$a[‘山东’][1] =

“威海”

;


$a[‘黑龙江’][0] =

“哈尔滨”

;


$a[‘黑龙江’][1] =

“齐齐哈尔”

;




foreach

($a

as

$key1=>$v1) {


echo

“<b>$key1</b>”

.'<br/>’;



foreach

($v1

as

$v2) {


echo

“$v2 \n”

;


}


echo ‘<br/>’;


}


?>

<?php


$arr = array(


‘张三’ => ‘济南’,


‘李四’ => ‘烟台’,


‘王五’ => ‘威海’,


‘赵六’ => ‘北京’,


);




while

($person = current($arr)) {



if

($person == ‘威海’) {


echo key($arr).'<br />’;


}


next($arr);


}


?>

<?php


$arr = array(


‘张三’ => ‘济南’,


‘李四’ => ‘烟台’,


‘王五’ => ‘威海’,


‘赵六’ => ‘北京’,


);




for

(reset($arr);$key=key($arr);next($arr))


echo $key.'<br/>’;


?>