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必须收藏的php实用代码片段
网络编程 2024/11/19 佚名
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在编写代码的时候有个神奇的工具总是好的！下面这里收集了 40+ PHP 代码片段，可以帮助你开发PHP 项目。 之前已经为大家分享了《必须收藏的23个php实用代码片段》。
这些PHP 片段对于PHP 初学者也非常有帮助，非常容易学习，让我们开始学习吧～

24. 从 PHP 数据创建 CSV 文件 

function generateCsv($data, $delimiter = ',', $enclosure = '"') {
  $handle = fopen('php://temp', 'r+');
  foreach ($data as $line) {
      fputcsv($handle, $line, $delimiter, $enclosure);
  }
  rewind($handle);
  while (!feof($handle)) {
      $contents .= fread($handle, 8192);
  }
  fclose($handle);
  return $contents;
}

语法：

<"apple";
$data[1] = "oranges";
generateCsv($data, $delimiter = ',', $enclosure = '"');
"htmlcode">



$xml_string="<";
   
//load the xml string using simplexml function
$xml = simplexml_load_string($xml_string);
   
//loop through the each node of molecule
foreach ($xml->molecule as $record)
{
  //attribute are accessted by
  echo $record['name'], ' ';
  //node are accessted by -> operator
  echo $record->symbol, ' ';
  echo $record->code, '';
}






26. 解析 JSON 数据 







$json_string='{"id":1,"name":"rolf","country":"russia","office":["google","oracle"]} ';
$obj=json_decode($json_string);
//print the parsed data
echo $obj->name; //displays rolf
echo $obj->office[0]; //displays google









27. 获取当前页面 URL 

这个 PHP 片段可以帮助你让用户登录后直接跳转到之前浏览的页面 







function current_url()
{
$url = "http://" . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
$validURL = str_replace("&", "&", $url);
return validURL;
}






语法： 







<"Currently you are on: ".current_url();
"htmlcode">



function my_twitter($username)
{
   $no_of_tweets = 1;
   $feed = "http://search.twitter.com/search.atom" . $username . "&rpp=" . $no_of_tweets;
   $xml = simplexml_load_file($feed);
  foreach($xml->children() as $child) {
    foreach ($child as $value) {
      if($value->getName() == "link") $link = $value['href'];
      if($value->getName() == "content") {
        $content = $value . "";
    echo '<p class="twit">'.$content.' <a class="twt" href="'.$link.'" title=""> </a></p>';
      }  
    }
  }  
}  






语法：







<"koonktech";
my_twitter($handle);
"htmlcode">



function tweetCount($url) {
  $content = file_get_contents("http://api.tweetmeme.com/url_info".$url);
  $element = new SimpleXmlElement($content);
  $retweets = $element->story->url_count;
  if($retweets){
    return $retweets;
  } else {
    return 0;
  }
}
  






语法：







<"http://blog.koonk.com";
$count = tweetCount($url);
return $count;
"htmlcode">



<"2015-12-04";
$diff = abs(strtotime($date2) - strtotime($date1));
$years = floor($diff / (365*60*60*24));
$months = floor(($diff - $years * 365*60*60*24) / (30*60*60*24));
$days = floor(($diff - $years * 365*60*60*24 - $months*30*60*60*24)/ (60*60*24));
printf("%d years, %d months, %d days\n", $years, $months, $days);
-------------------------------------------------------- OR
$date1 = new DateTime("2007-03-24");
$date2 = new DateTime("2009-06-26");
$interval = $date1->diff($date2);
echo "difference " . $interval->y . " years, " . $interval->m." months, ".$interval->d." days ";
// shows the total amount of days (not divided into years, months and days like above)
echo "difference " . $interval->days . " days ";
-------------------------------------------------------- OR
     
     
/**
 * Calculate differences between two dates with precise semantics. Based on PHPs DateTime::diff()
 * implementation by Derick Rethans. Ported to PHP by Emil H, 2011-05-02. No rights reserved.
 *
 * See here for original code:
 * http://svn.php.net/viewvc/php/php-src/trunk/ext/date/lib/tm2unixtime.c"m", "y", &$base);
  $year = $base["y"];
  $month = $base["m"];
  if (!$result["invert"]) {
    while ($result["d"] < 0) {
      $month--;
      if ($month < 1) {
        $month += 12;
        $year--;
      }
      $leapyear = $year % 400 == 0 || ($year % 100 != 0 && $year % 4 == 0);
      $days = $leapyear "d"] += $days;
      $result["m"]--;
    }
  } else {
    while ($result["d"] < 0) {
      $leapyear = $year % 400 == 0 || ($year % 100 != 0 && $year % 4 == 0);
      $days = $leapyear "d"] += $days;
      $result["m"]--;
      $month++;
      if ($month > 12) {
        $month -= 12;
        $year++;
      }
    }
  }
  return $result;
}
function _date_normalize($base, $result)
{
  $result = _date_range_limit(0, 60, 60, "s", "i", $result);
  $result = _date_range_limit(0, 60, 60, "i", "h", $result);
  $result = _date_range_limit(0, 24, 24, "h", "d", $result);
  $result = _date_range_limit(0, 12, 12, "m", "y", $result);
  $result = _date_range_limit_days(&$base, &$result);
  $result = _date_range_limit(0, 12, 12, "m", "y", $result);
  return $result;
}
/**
 * Accepts two unix timestamps.
 */
function _date_diff($one, $two)
{
  $invert = false;
  if ($one > $two) {
    list($one, $two) = array($two, $one);
    $invert = true;
  }
  $key = array("y", "m", "d", "h", "i", "s");
  $a = array_combine($key, array_map("intval", explode(" ", date("Y m d H i s", $one))));
  $b = array_combine($key, array_map("intval", explode(" ", date("Y m d H i s", $two))));
  $result = array();
  $result["y"] = $b["y"] - $a["y"];
  $result["m"] = $b["m"] - $a["m"];
  $result["d"] = $b["d"] - $a["d"];
  $result["h"] = $b["h"] - $a["h"];
  $result["i"] = $b["i"] - $a["i"];
  $result["s"] = $b["s"] - $a["s"];
  $result["invert"] = $invert "days"] = intval(abs(($one - $two)/86400));
  if ($invert) {
    _date_normalize(&$a, &$result);
  } else {
    _date_normalize(&$b, &$result);
  }
  return $result;
}
$date = "2014-12-04 19:37:22";
echo '<pre>';
print_r( _date_diff( strtotime($date), time() ) );
echo '</pre>';
"htmlcode">



function Delete($path)
{
  if (is_dir($path) === true)
  {
    $files = array_diff(scandir($path), array('.', '..'));
    foreach ($files as $file)
    {
      Delete(realpath($path) . '/' . $file);
    }
    return rmdir($path);
  }
  else if (is_file($path) === true)
  {
    return unlink($path);
  }
  return false;
}






语法： 







<"images/";
Delete($path); // This will delete images folder along with its contents.
"htmlcode">



function highlighter_text($text, $words)
{
  $split_words = explode( " " , $words );
  foreach($split_words as $word)
  {
    $color = "#4285F4";
    $text = preg_replace("|($word)|Ui" ,
      "<span style=\"color:".$color.";\"><b>$1</b></span>" , $text );
  }
  return $text;
}






语法： 







<"I like chocolates and I like apples";
$words = "apple";
echo highlighter_text($string ,$words);
"htmlcode">



<" Hello ";
$output .= " World! ";
$output .= "\r\n";
fputs($fp, $output);
fclose($fp);
"htmlcode">



function imagefromURL($image,$rename)
{
$ch = curl_init($image);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_BINARYTRANSFER,1);
$rawdata=curl_exec ($ch);
curl_close ($ch);
$fp = fopen("$rename",'w');
fwrite($fp, $rawdata);
fclose($fp);
}






语法： 







<"http://koonk.com/images/logo.png";
$rename = "koonk.png";
imagefromURL($url,$rename);
"htmlcode">



function isvalidURL($url)
{
$check = 0;
if (filter_var($url, FILTER_VALIDATE_URL) !== false) {
 $check = 1;
}
return $check;
}
 






语法：







<"http://koonk.com";
$check = checkvalidURL($url);
echo $check; //if returns 1 then URL is valid.
"htmlcode">



function qr_code($data, $type = "TXT", $size ='150', $ec='L', $margin='0') 
{
   $types = array("URL" =--> "http://", "TEL" => "TEL:", "TXT"=>"", "EMAIL" => "MAILTO:");
  if(!in_array($type,array("URL", "TEL", "TXT", "EMAIL")))
  {
    $type = "TXT";
  }
  if (!preg_match('/^'.$types[$type].'/', $data))
  {
    $data = str_replace("\\", "", $types[$type]).$data;
  }
  $ch = curl_init();
  $data = urlencode($data);
  curl_setopt($ch, CURLOPT_URL, 'http://chart.apis.google.com/chart');
  curl_setopt($ch, CURLOPT_POST, true);
  curl_setopt($ch, CURLOPT_POSTFIELDS, 'chs='.$size.'x'.$size.'&cht=qr&chld='.$ec.'|'.$margin.'&chl='.$data);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  curl_setopt($ch, CURLOPT_HEADER, false);
  curl_setopt($ch, CURLOPT_TIMEOUT, 30);
  $response = curl_exec($ch);
  curl_close($ch);
  return $response;
}






语法： 







<"Content-type: image/png");
echo qr_code("http://koonk.com", "URL");
"htmlcode">



function getDistanceBetweenPointsNew($latitude1, $longitude1, $latitude2, $longitude2) {
  $theta = $longitude1 - $longitude2;
  $miles = (sin(deg2rad($latitude1)) * sin(deg2rad($latitude2))) + (cos(deg2rad($latitude1)) * cos(deg2rad($latitude2)) * cos(deg2rad($theta)));
  $miles = acos($miles);
  $miles = rad2deg($miles);
  $miles = $miles * 60 * 1.1515;
  $feet = $miles * 5280;
  $yards = $feet / 3;
  $kilometers = $miles * 1.609344;
  $meters = $kilometers * 1000;
  return compact('miles','feet','yards','kilometers','meters');
}






语法： 







<"htmlcode">



function getTweets($hash_tag) {
  $url = 'http://search.twitter.com/search.atom"<p>Connecting to <strong>$url</strong> ...</p>";
  $ch = curl_init($url);
  curl_setopt ($ch, CURLOPT_RETURNTRANSFER, TRUE);
  $xml = curl_exec ($ch);
  curl_close ($ch);
  //If you want to see the response from Twitter, uncomment this next part out:
  //echo "<p>Response:</p>";
  //echo "<pre>".htmlspecialchars($xml)."</pre>";
  $affected = 0;
  $twelement = new SimpleXMLElement($xml);
  foreach ($twelement->entry as $entry) {
    $text = trim($entry->title);
    $author = trim($entry->author->name);
    $time = strtotime($entry->published);
    $id = $entry->id;
    echo "<p>Tweet from ".$author.": <strong>".$text."</strong> <em>Posted ".date('n/j/y g:i a',$time)."</em></p>";
  }
  return true ;
}






39. 添加 th,st,nd 或者 rd 作为数字的后缀 







Friday the 13th
function ordinal($cdnl){
  $test_c = abs($cdnl) % 10;
  $ext = ((abs($cdnl) %100 < 21 && abs($cdnl) %100 > 4) "htmlcode">



<"htmlcode">



<"r");  
  while(!feof($file)) {
  
    // send the current file part to the browser
    print fread($file, round($download_rate * 1024));  
  
    // flush the content to the browser
    flush();
  
    // sleep one second
    sleep(1);  
  }  
  
  // close file stream
  fclose($file);}
else {
  die('Error: The file '.$local_file.' does not exist!');
}
"htmlcode">



<"Content-type: image/png");
$string = $_GET['text'];
$im = imagecreatefrompng("images/button.png");
$color = imagecolorallocate($im, 255, 255, 255);
$px = (imagesx($im) - 7.5 * strlen($string)) / 2;
$py = 9;
$fontSize = 1;
imagestring($im, fontSize, $px, $py, $string, $color);
imagepng($im);
imagedestroy($im);
"htmlcode">



function remote_filesize($url, $user = "", $pw = "")
{
  ob_start();
  $ch = curl_init($url);
  curl_setopt($ch, CURLOPT_HEADER, 1);
  curl_setopt($ch, CURLOPT_NOBODY, 1);
  if(!empty($user) && !empty($pw))
  {
    $headers = array('Authorization: Basic ' . base64_encode("$user:$pw"));
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
  }
  $ok = curl_exec($ch);
  curl_close($ch);
  $head = ob_get_contents();
  ob_end_clean();
  $regex = '/Content-Length:\s([0-9].+"unknown";
}






语法







<"http://koonk.com/images/logo.png";
$size = remote_filesize($url);
echo $size;
"htmlcode">



<"'.$pdf_file.'" -colorspace RGB -resize 800 "'.$save_to.'"', $output, $return_var);
if($return_var == 0) {       //if exec successfuly converted pdf to jpg
  print "Conversion OK";
}
else print "Conversion failed.".$output;
"htmlcode">



function get_tiny_url($url) 
{ 
  $ch = curl_init(); 
  $timeout = 5; 
  curl_setopt($ch,CURLOPT_URL,'http://tinyurl.com/api-create.php"htmlcode">



<"http://blog.koonk.com/2015/07/Hello-World";
$tinyurl = get_tiny_url($url);
echo $tinyurl;
"htmlcode">



function str_between($string, $start, $end)
{
$string = " ".$string; $ini = strpos($string,$start); if ($ini == 0) return ""; $ini += strlen($start); $len = strpos($string,$end,$ini) - $ini; return substr($string,$ini,$len); }
function get_youtube_download_link(){
  $youtube_link = $_GET['youtube'];
  $youtube_page = file_get_contents($youtube_link);
  $v_id = str_between($youtube_page, "&video_id=", "&");
  $t_id = str_between($youtube_page, "&t=", "&");
  $flv_link = "http://www.youtube.com/get_video";
  $hq_flv_link = "http://www.youtube.com/get_video";
  $mp4_link = "http://www.youtube.com/get_video";
  $threegp_link = "http://www.youtube.com/get_video";
  echo "\t\tDownload (right-click > save as):\n\t\t";
  echo "<a href=\"$flv_link\">FLV</a>\n\t\t";
  echo "<a href=\"$hq_flv_link\">HQ FLV (if available)</a>\n\t\t";
  echo "<a href=\"$mp4_link\">MP4</a>\n\t\t";
  echo "<a href=\"$threegp_link\">3GP</a>\n";
}






46. Facebook 样式的时间戳 







Facebook (x mins age, y hours ago etc)
function nicetime($date)
{
  if(empty($date)) {
    return "No date provided";
  }
    
  $periods     = array("second", "minute", "hour", "day", "week", "month", "year", "decade");
  $lengths     = array("60","60","24","7","4.35","12","10");
    
  $now       = time();
  $unix_date     = strtotime($date);
    
    // check validity of date
  if(empty($unix_date)) {  
    return "Bad date";
  }
  // is it future date or past date
  if($now > $unix_date) {  
    $difference   = $now - $unix_date;
    $tense     = "ago";
      
  } else {
    $difference   = $unix_date - $now;
    $tense     = "from now";
  }
    
  for($j = 0; $difference >= $lengths[$j] && $j < count($lengths)-1; $j++) {
    $difference /= $lengths[$j];
  }
    
  $difference = round($difference);
    
  if($difference != 1) {
    $periods[$j].= "s";
  }
    
  return "$difference $periods[$j] {$tense}";
}






语法： 







<"2015-07-05 03:45";
$result = nicetime($date); // 2 days ago
?>






以上就是本文的全部内容，希望对大家的学习有所帮助。


                                

                                

                                     

                                

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一句话新闻
一口气升级7个大模型SaaS应用，百度智能云：突出一个“开箱即用” - 2024/11/19

这一波大模型产业落地浪潮里，不少企业其实处在 “干瞪眼“的状态。

一种情况是，很多大模型产品看得见却摸不着，在台上一个个遥遥领先——今天Sora技精四座，明天英伟达的机器人又赢得满堂彩，可是到了台下一问：啥时候能用上啊？答曰：遥遥无期。

另一种情况是，企业想用上大模型，却又难免瞻前顾后——既要考虑场景融合，又得兼顾安全性，还要考虑打通现有系统，再加上各种部署成本和繁琐的采购流程……最后只能拂袖：罢了，再等等吧。

                        

                    

                

            

            
稳了！魔兽国服回归的3条重磅消息！官宣时间再确认！
昨天有一位朋友在大神群里分享，自己亚服账号被封号之后居然弹出了国服的封号信息对话框。
这里面让他访问的是一个国服的战网网址，com.cn和后面的zh都非常明白地表明这就是国服战网。
而他在复制这个网址并且进行登录之后，确实是网易的网址，也就是我们熟悉的停服之后国服发布的暴雪游戏产品运营到期开放退款的说明。这是一件比较奇怪的事情，因为以前都没有出现这样的情况，现在突然提示跳转到国服战网的网址，是不是说明了简体中文客户端已经开始进行更新了呢？

            

                

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