PHP把数组写入文件实例代码

<?php
$file="./data/file.cache";
 
$array = array("count" => "3000",
 
               "num"  =>"300");
 
//缓存
 
file_put_contents($file,serialize($array));//写入缓存
?>

<?
$file="./data/file.cache";
$handle = fopen($file, "r");
$cacheArray = unserialize(fread($handle, filesize ($file)));
print_r($cacheArray);
?>

<?php //要写入PHP文件的数组

$write_array = array( '1' => 'oneone', '2' => 'two', '3' => 'three', '4' => 'four', '5' => 'five' ); //字符串处理
$string_start = "<?phpn"; $string_process = var_export($write_array, TRUE); $string_end = "n?>"; $string = $string_start.$string_process.$string_end; //开始写入文件
echo file_put_contents('test_array.php', $string);
?>

1，var_export():

if(($HTTP_HOST=="www.111cn.net")or($HTTP_HOST=="111cn.net"))
{
header("HTTP/1.1 301 Moved Permanently");
Header("Location: /index.php");
}
elseif($HTTP_HOST=="www.111cn.net")
{
header("HTTP/1.1 301 Moved Permanently");
Header("Location: http://111cn.net");
}
else
{
Header("Location: /404.htm");
}
?>

//定义编码
header( 'Content-Type:text/html;charset=utf-8 ');

//Atom
header('Content-type: application/atom+xml');

//CSS
header('Content-type: text/css');

//Javascript
header('Content-type: text/javascript');

//JPEG Image
header('Content-type: image/jpeg');

//JSON
header('Content-type: application/json');

//PDF
header('Content-type: application/pdf');

//RSS
header('Content-Type: application/rss+xml; charset=ISO-8859-1');

//Text (Plain)
header('Content-type: text/plain');

//XML
header('Content-type: text/xml');

// ok
header('HTTP/1.1 200 OK');

//设置一个404头:
header('HTTP/1.1 404 Not Found');

//设置地址被永久的重定向
header('HTTP/1.1 301 Moved Permanently');

//转到一个新地址
header('Location: http://www.example.org/');

//文件延迟转向:
header('Refresh: 10; url=http://www.example.org/');
print 'You will be redirected in 10 seconds';

//当然，也可以使用html语法实现
// <meta http-equiv="refresh" content="10;http://www.example.org/ />

// override X-Powered-By: PHP:
header('X-Powered-By: PHP/4.4.0');
header('X-Powered-By: Brain/0.6b');

//文档语言
header('Content-language: en');

//告诉浏览器最后一次修改时间
$time = time() - 60; // or filemtime($fn), etc
header('Last-Modified: '.gmdate('D, d M Y H:i:s', $time).' GMT');

//告诉浏览器文档内容没有发生改变
header('HTTP/1.1 304 Not Modified');

//设置内容长度
header('Content-Length: 1234');

//设置为一个下载类型
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename="example.zip"');
header('Content-Transfer-Encoding: binary');
// load the file to send:
readfile('example.zip');

// 对当前文档禁用缓存
header('Cache-Control: no-cache, no-store, max-age=0, must-revalidate');
header('Expires: Mon, 26 Jul 1997 05:00:00 GMT'); // Date in the past
header('Pragma: no-cache');

//设置内容类型:
header('Content-Type: text/html; charset=iso-8859-1');
header('Content-Type: text/html; charset=utf-8');
header('Content-Type: text/plain'); //纯文本格式
header('Content-Type: image/jpeg'); //JPG***
header('Content-Type: application/zip'); // ZIP文件
header('Content-Type: application/pdf'); // PDF文件
header('Content-Type: audio/mpeg'); // 音频文件
header('Content-Type: application/x-shockw**e-flash'); //Flash动画

//显示登陆对话框
header('HTTP/1.1 401 Unauthorized');
header('WWW-Authenticate: Basic realm="Top Secret"');
print 'Text that will be displayed if the user hits cancel or ';
print 'enters wrong login data';

<?php
$str="<a href="xxx">超级链接</a>|<a href="xxx">这是个链接</a><br>";
function removelink($str){
$mode=array("#<a href="(.*)">#iUs","#</a>#iUs");
$want=array("","");
$con=preg_replace($mode,$want,$str);
return $con;
}
echo removelink($str);
?>

$name=print "nihao n";
$str = 'test print value is'.$name;
eval("$print="$str";");
echo $print;

if (!print("Hello, World")){

   die("you are not listening to me");

}

$str = "Hello";

$number = 123;

printf("%s world. Day number %u",$str,$number);

?>
#Results======
Hello world. Day number 123

$number = 123;

printf("With 2 decimals: %1$.2fbr />With no decimals: %1$u",$number);

?>
#Result
With 2 decimals: 123.00
With no decimals: 123

$a = array('name' => 'Fred', 'age' => '15', 'wife' => 'Wilma');

print_r($a);
Output： Array

{

   [name] => Fred

    [age] => 15

    [wife] => Wilma

}

class P {

  var $name = 'nat';

  // ...

}

$p = new P;

print_r($p);
Output: Object

{

[name] => nat

}

 Array ( [name] => hiro [city] => Shanghai [code] => 200051 [age] => 23 )

 $person = array(
 array("hiro", "23", "suzhou"),
 array("yoyo", "25", "shanghai"),
 array("janstar", "28", "xinjiang")
);
print_r()输出的原始数组结果为：

1
 Array ( [0] => Array ( [0] => hiro [1] => 23 [2] => suzhou ) [1] => Array ( [0] => yoyo [1] => 25 [2] => shanghai ) [2] => Array ( [0] => janstar [1] => 28 [2] => xinjiang ) )

function compare0($x, $y) {
 if($x[0] == $t[0]) {
  return 0;
 } elseif ($x[0] < $y[0]) {
  return -1;
 } else {
  return 1;
 }
}
 
usort($person, compare0);
echo "按第一个元素正向排序：";
print_r($person);
输出的结果如下：

1
 按第一个元素正向排序：Array ( [0] => Array ( [0] => hiro [1] => 23 [2] => suzhou ) [1] => Array ( [0] => janstar [1] => 28 [2] => xinjiang ) [2] => Array ( [0] => yoyo [1] => 25 [2] => shanghai ) )

function compare2($x, $y) {
 if($x[2] == $t[2]) {
  return 0;
 } elseif ($x[2] < $y[2]) {
  return -1;
 } else {
  return 1;
 }
}
 
usort($person, compare2);
echo "按第三个元素正向排序：";
print_r($person);
输出的结果如下：

 按第三个元素正向排序：Array ( [0] => Array ( [0] => yoyo [1] => 25 [2] => shanghai ) [1] => Array ( [0] => hiro [1] => 23 [2] => suzhou ) [2] => Array ( [0] => janstar [1] => 28 [2] => xinjiang ) )

<?php
error_reporting(0);

/**
* @数字数组排序 可按从大到小或从小到大排序 
*/
function sortArray($array, $choice) {
    $values = array_values($array); // 建立一个数字索引的数组
    $ch = $choice==0 ? min:max; // 参数$choice为0按从小到大排列，否则其他都默认为按从大到小
    do {
        $val = $ch($values); // 找出最大或最小值
        $key = array_search($val,$values); // 取得最大值的键名
        $result[$key] = $val; // 将最大值存入新数组
        unset($values[$key]);
    } while (count($values) > 0);
    return $result;
}

$array = array(100, 1000, 1, 10000);
//$array = sortArray($array, 0);
$array = sortArray($array, 1);
foreach($array as $a) {
    echo "$a ";
}
?>