php 获取文件名后缀实例小结

<?php
$path = "/usr/www/html/index.php";
echo basename($path)."<br>";
//如果选择suffix则忽略扩展名
echo basename($path,".php");
?>

<?php
//——FILE__返回文件完整路径
$dir = dirname(__FILE__);
echo $dir;
?>

<?php
$path = "./exercise/php.txt";
$realpath = realpath($path);
echo $realpath;
?>

<?php
$str = 'con[1]=28&selt[1]=1&con[2]=29&selt[2]=4&con[3]=26&selt[3]=4&con[4]=30&selt[4]=2&con[5]=4&selt[5]=1&con[6]=11&con[7]=12';
$arr = explode('&',$str);
$arr2 = array();
foreach($arr as $k=>$v){
        $arr = explode('=',$v);
        $arr2[$k] = $arr[1];
}
print_r($arr2);
?>
//输出
Array
(
    [0] => 28
    [1] => 1
    [2] => 29
    [3] => 4
    [4] => 26
    [5] => 4
    [6] => 30
    [7] => 2
    [8] => 4
    [9] => 1
    [10] => 11
    [11] => 12
)
//第二个
<?php
$str = 'con[1]=28&selt[1]=1&con[2]=29&selt[2]=4&con[3]=26&selt[3]=4&con[4]=30&selt[4]=2&con[5]=4&selt[5]=1&con[6]=11&con[7]=12';
$arr = explode('&',$str);
$arr2 = array();
foreach($arr as $k=>$v){
        $arr = explode('=',$v);
        $arr2[$arr[0]] = $arr[1];
}
print_r($arr2);
?>
//输出
Array
(
    [con[1]] => 28
    [selt[1]] => 1
    [con[2]] => 29
    [selt[2]] => 4
    [con[3]] => 26
    [selt[3]] => 4
    [con[4]] => 30
    [selt[4]] => 2
    [con[5]] => 4
    [selt[5]] => 1
    [con[6]] => 11
    [con[7]] => 12
)

//将多维数组中所有的数值转换成字符串????》最多支持三维数组
function implodex( $glue, $array, $separator='' ) {
if ( ! is_array( $array ) ) return $array;
$string = array();

$count = 0;
foreach ( $array as $key => $val ) {
if ( is_array( $val ) )
$val = implode( $glue, $val );

if($count == 0){
$string[] = "{$val}";
}else{
$string[] = "{$glue}{$val}";
}
}

if(empty($separator))$separator = $glue;

return implode( $separator, $string );
}

<?php
// $Id: test3.php,v 1.0 2011-6-7  goba Exp $
 
/**
 * 测试PHP存储数值
 *
 * @author Lok
 */
 
 
$config = array (
 'host' => 'localhost',
 'user_name' => 'root',
 'password' => '',
 'db_name' => 'ecshop',
 'charset' => 'utf8',
 'remark' => array ('note' => '要注意密码的安全', 'author' => 'Lok')
);
 
 
$str = serialize($config);
$arr = unserialize($str);
 
echo '--------str--------<br />';
var_dump($str);
echo '<br />-------arr----------<br />';
var_dump($arr)
?>结果：

--------str--------
string(221) "a:6:{s:4:"host";s:9:"localhost";
   s:9:"user_name";s:4:"root";
   s:8:"password";s:0:"";
   s:7:"db_name";s:8:"ecshop";
   s:7:"charset";s:4:"utf8";
   s:6:"remark";a:2:{s:4:"note";s:24:"要注意密码的安全";
                s:6:"author";s:3:"Lok";}}"
-------arr----------
array(6) { ["host"]=> string(9) "localhost"
        ["user_name"]=> string(4) "root"
        ["password"]=> string(0) ""
        ["db_name"]=> string(8) "emoishop"
               ["charset"]=> string(4) "utf8"
               ["remark"]=> array(2) { ["note"]=> string(24) "要注意密码的安全"
             ["author"]=> string(3) "Lok" } }

$value="the best way is by yourself";

setcookie("cookiename",$value,time()+60*60*24*7);

setcookie("CookieArray[0]","Value1");

setcookie("CookieArray[1]","Value2");

setcookie("CookieArray['one']","Value1");

setcookie("CookieArray['two']","Value2");

<?php

setcookie("cookie[three]","cookiethree");

setcookie("cookie[two]","cookietwo");

setcookie("cookie[one]","cookieone");

//刷新页面后，显示出来

if(isset($_COOKIE['cookie'])){

foreach($_COOKIE['cookie']as$name=>$value){

echo"$name:$value<br/>n";

}

}

?>

setcookie(“MyCookie”,”Value”,time()-1);

　　$array1 = array(1=>'0');
　　$array2 = array(1=> "data");
　    $result1 = $array2 + $array1;/*结果为$array2的值*/
　   print_r($result);
　   $result = $array1 + $array2 ;/*结果为$array1的值*/
　   print_r($result);
　   $result3 = array_merge($array2,$array1);/*结果为$array2和$array1的值，键名被重新分配*/
　   print_r($result3);
　   $result4 = array_merge($array1,$array2);/*结果为$array1和$array2的值，键名被重新分配*/
　   print_r($result4);

输出结果为：
Array ( [1] => data )
Array ( [1] => 0 )
Array (
[0] => data
[1] => 0
)
Array
(
[0] => 0
[1] => data
)

 $array1 = array('asd'=>'0');
　　$array2 = array('asd' => "data");
　 $result1 = $array2 + $array1;/*结果为$array2的值*/
　 print_r($result);
　   $result = $array1 + $array2 ;/*结果为$array1的值*/
　   print_r($result);
　   $result3 = array_merge($array2,$array1);/*结果为$array1*/
　   print_r($result3);
　   $result4 = array_merge($array1,$array2);/*结果为$array2*/
　   print_r($result4);

输出结果为：

Array ( [asd] => data )
Array ( [asd] => 0 )
Array ( [asd] => 0 )
Array ( [asd] => data )

<?php
//需要重组的数组
$arrar=array();
$array[]=array('ItemID' => 110126866896,'CategoryID'=>111);
$array[]=array('ItemID' => 120126866896,'CategoryID'=>112);
$array[]=array('ItemID' => 130126866896,'CategoryID'=>113);
$array[]=array('ItemID' => 140126866896,'CategoryID'=>114);
$array[]=array('ItemID' => 150126866896,'CategoryID'=>115);
$array[]=array('ItemID' => 160126866896,'CategoryID'=>116);
$array[]=array('ItemID' => 170126866896,'CategoryID'=>117);
$array[]=array('ItemID' => 118126866896,'CategoryID'=>111);
$array[]=array('ItemID' => 121126866896,'CategoryID'=>112);
$array[]=array('ItemID' => 132126866896,'CategoryID'=>113);
$array[]=array('ItemID' => 143126866896,'CategoryID'=>114);
$array[]=array('ItemID' => 154126866896,'CategoryID'=>115);
$array[]=array('ItemID' => 165126866896,'CategoryID'=>116);
$array[]=array('ItemID' => 176126866896,'CategoryID'=>117);
//数组根据分类进行重组
$newArray=array();
foreach($array as $val){
    $newArray[$val['CategoryID']][]=$val;
}
 
//删除原始数组释放空间
$array=null;
unset($array);
 
print_r($newArray);
 
?>