(Praktisch) Zusammenfassung sehr praktischer allgemeiner PHP-Funktionen

黄舟
Freigeben: 2023-03-05 12:52:02
Original
900 Leute haben es durchsucht

Die Beispiele in diesem Artikel fassen einige Funktionen zusammen, die bei der PHP-Anwendungsentwicklung häufig verwendet werden. Diese Funktionen umfassen Zeichenoperationen, Dateioperationen und andere Operationen. Sie werden Ihnen als Referenz zur Verfügung gestellt. Die Details sind wie folgt:

<?php
/**
 * 获取客户端IP
 * @return [string] [description]
 */
function getClientIp() {
 $ip = NULL;
 if (isset($_SERVER[&#39;HTTP_X_FORWARDED_FOR&#39;])) {
  $arr = explode(&#39;,&#39;, $_SERVER[&#39;HTTP_X_FORWARDED_FOR&#39;]);
  $pos = array_search(&#39;unknown&#39;,$arr);
  if(false !== $pos) unset($arr[$pos]);
  $ip = trim($arr[0]);
 }elseif (isset($_SERVER[&#39;HTTP_CLIENT_IP&#39;])) {
  $ip = $_SERVER[&#39;HTTP_CLIENT_IP&#39;];
 }elseif (isset($_SERVER[&#39;REMOTE_ADDR&#39;])) {
  $ip = $_SERVER[&#39;REMOTE_ADDR&#39;];
 }
 // IP地址合法验证
 $ip = (false !== ip2long($ip)) ? $ip : &#39;0.0.0.0&#39;;
 return $ip;
}
 
/**
 * 获取在线IP
 * @return String
 */
function getOnlineIp($format=0) {
 global $S_GLOBAL;
 if(empty($S_GLOBAL[&#39;onlineip&#39;])) {
  if(getenv(&#39;HTTP_CLIENT_IP&#39;) && strcasecmp(getenv(&#39;HTTP_CLIENT_IP&#39;), &#39;unknown&#39;)) {
   $onlineip = getenv(&#39;HTTP_CLIENT_IP&#39;);
  } elseif(getenv(&#39;HTTP_X_FORWARDED_FOR&#39;) && strcasecmp(getenv(&#39;HTTP_X_FORWARDED_FOR&#39;), &#39;unknown&#39;)) {
   $onlineip = getenv(&#39;HTTP_X_FORWARDED_FOR&#39;);
  } elseif(getenv(&#39;REMOTE_ADDR&#39;) && strcasecmp(getenv(&#39;REMOTE_ADDR&#39;), &#39;unknown&#39;)) {
   $onlineip = getenv(&#39;REMOTE_ADDR&#39;);
  } elseif(isset($_SERVER[&#39;REMOTE_ADDR&#39;]) && $_SERVER[&#39;REMOTE_ADDR&#39;] && strcasecmp($_SERVER[&#39;REMOTE_ADDR&#39;], &#39;unknown&#39;)) {
   $onlineip = $_SERVER[&#39;REMOTE_ADDR&#39;];
  }
  preg_match("/[\d\.]{7,15}/", $onlineip, $onlineipmatches);
  $S_GLOBAL[&#39;onlineip&#39;] = $onlineipmatches[0] ? $onlineipmatches[0] : &#39;unknown&#39;;
 }
 
 if($format) {
  $ips = explode(&#39;.&#39;, $S_GLOBAL[&#39;onlineip&#39;]);
  for($i=0;$i<3;$i++) {
   $ips[$i] = intval($ips[$i]);
  }
  return sprintf(&#39;%03d%03d%03d&#39;, $ips[0], $ips[1], $ips[2]);
 } else {
  return $S_GLOBAL[&#39;onlineip&#39;];
 }
}
 
 
 
/**
 * 获取url
 * @return [type] [description]
 */
function getUrl(){
 $pageURL = &#39;http&#39;;
 if (isset($_SERVER["HTTPS"]) && $_SERVER["HTTPS"] == "on") {
 $pageURL .= "s";
 }
 $pageURL .= "://";
 if ($_SERVER["SERVER_PORT"] != "80") {
 $pageURL .= $_SERVER["HTTP_HOST"] . ":" . $_SERVER["SERVER_PORT"] . $_SERVER["REQUEST_URI"];
 } else {
 $pageURL .= $_SERVER["HTTP_HOST"] . $_SERVER["REQUEST_URI"];
 }
 return $pageURL;
}
 
/**
 * 获取当前站点的访问路径根目录
 * @return [type] [description]
 */
function getSiteUrl() {
 $uri = $_SERVER[&#39;REQUEST_URI&#39;]?$_SERVER[&#39;REQUEST_URI&#39;]:($_SERVER[&#39;PHP_SELF&#39;]?$_SERVER[&#39;PHP_SELF&#39;]:$_SERVER[&#39;SCRIPT_NAME&#39;]);
 return &#39;http://&#39;.$_SERVER[&#39;HTTP_HOST&#39;].substr($uri, 0, strrpos($uri, &#39;/&#39;)+1);
}
 
 
 
/**
 * 字符串截取,支持中文和其他编码
 * @param [string] $str  [字符串]
 * @param integer $start [起始位置]
 * @param integer $length [截取长度]
 * @param string $charset [字符串编码]
 * @param boolean $suffix [是否有省略号]
 * @return [type]   [description]
 */
function msubstr($str, $start=0, $length=15, $charset="utf-8", $suffix=true) {
 if(function_exists("mb_substr")) {
  return mb_substr($str, $start, $length, $charset);
 } elseif(function_exists(&#39;iconv_substr&#39;)) {
  return iconv_substr($str,$start,$length,$charset);
 }
 $re[&#39;utf-8&#39;] = "/[\x01-\x7f]|[\xc2-\xdf][\x80-\xbf]|[\xe0-\xef][\x80-\xbf]{2}|[\xf0-\xff][\x80-\xbf]{3}/";
 $re[&#39;gb2312&#39;] = "/[\x01-\x7f]|[\xb0-\xf7][\xa0-\xfe]/";
 $re[&#39;gbk&#39;] = "/[\x01-\x7f]|[\x81-\xfe][\x40-\xfe]/";
 $re[&#39;big5&#39;] = "/[\x01-\x7f]|[\x81-\xfe]([\x40-\x7e]|\xa1-\xfe])/";
 preg_match_all($re[$charset], $str, $match);
 $slice = join("",array_slice($match[0], $start, $length));
 if($suffix) {
  return $slice."…";
 }
 return $slice;
}
 
/**
 * php 实现js escape 函数
 * @param [type] $string [description]
 * @param string $encoding [description]
 * @return [type]   [description]
 */
function escape($string, $encoding = &#39;UTF-8&#39;){
 $return = null;
 for ($x = 0; $x < mb_strlen($string, $encoding);$x ++)
 {
 $str = mb_substr($string, $x, 1, $encoding);
 if (strlen($str) > 1) { // 多字节字符
  $return .= "%u" . strtoupper(bin2hex(mb_convert_encoding($str, &#39;UCS-2&#39;, $encoding)));
 } else {
  $return .= "%" . strtoupper(bin2hex($str));
 }
 }
 return $return;
}
/**
 * php 实现 js unescape函数
 * @param [type] $str [description]
 * @return [type]  [description]
 */
function unescape($str) {
 $str = rawurldecode($str);
 preg_match_all("/(?:%u.{4})|.{4};|&#\d+;|.+/U",$str,$r);
 $ar = $r[0];
 foreach($ar as $k=>$v) {
  if(substr($v,0,2) == "%u"){
   $ar[$k] = iconv("UCS-2","utf-8//IGNORE",pack("H4",substr($v,-4)));
  } elseif(substr($v,0,3) == "") {
   $ar[$k] = iconv("UCS-2","utf-8",pack("H4",substr($v,3,-1)));
  } elseif(substr($v,0,2) == "&#") {
   echo substr($v,2,-1)."";
   $ar[$k] = iconv("UCS-2","utf-8",pack("n",substr($v,2,-1)));
  }
 }
 return join("",$ar);
}
 
/**
 * 数字转人名币
 * @param [type] $num [description]
 * @return [type]  [description]
 */
function num2rmb ($num) {
 $c1 = "零壹贰叁肆伍陆柒捌玖";
 $c2 = "分角元拾佰仟万拾佰仟亿";
 $num = round($num, 2);
 $num = $num * 100;
 if (strlen($num) > 10) {
  return "oh,sorry,the number is too long!";
 }
 $i = 0;
 $c = "";
 while (1) {
  if ($i == 0) {
   $n = substr($num, strlen($num)-1, 1);
  } else {
   $n = $num % 10;
  }
  $p1 = substr($c1, 3 * $n, 3);
  $p2 = substr($c2, 3 * $i, 3);
  if ($n != &#39;0&#39; || ($n == &#39;0&#39; && ($p2 == &#39;亿&#39; || $p2 == &#39;万&#39; || $p2 == &#39;元&#39;))) {
   $c = $p1 . $p2 . $c;
  } else {
   $c = $p1 . $c;
  }
  $i = $i + 1;
  $num = $num / 10;
  $num = (int)$num;
  if ($num == 0) {
   break;
  }
 }
 $j = 0;
 $slen = strlen($c);
 while ($j < $slen) {
  $m = substr($c, $j, 6);
  if ($m == &#39;零元&#39; || $m == &#39;零万&#39; || $m == &#39;零亿&#39; || $m == &#39;零零&#39;) {
   $left = substr($c, 0, $j);
   $right = substr($c, $j + 3);
   $c = $left . $right;
   $j = $j-3;
   $slen = $slen-3;
  }
  $j = $j + 3;
 }
 if (substr($c, strlen($c)-3, 3) == &#39;零&#39;) {
  $c = substr($c, 0, strlen($c)-3);
 } // if there is a &#39;0&#39; on the end , chop it out
 return $c . "整";
}
 
/**
 * 特殊的字符
 * @param [type] $str [description]
 * @return [type]  [description]
 */
function makeSemiangle($str) {
 $arr = array(
  &#39;0&#39; => &#39;0&#39;, &#39;1&#39; => &#39;1&#39;, &#39;2&#39; => &#39;2&#39;, &#39;3&#39; => &#39;3&#39;, &#39;4&#39; => &#39;4&#39;,
  &#39;5&#39; => &#39;5&#39;, &#39;6&#39; => &#39;6&#39;, &#39;7&#39; => &#39;7&#39;, &#39;8&#39; => &#39;8&#39;, &#39;9&#39; => &#39;9&#39;,
  &#39;A&#39; => &#39;A&#39;, &#39;B&#39; => &#39;B&#39;, &#39;C&#39; => &#39;C&#39;, &#39;D&#39; => &#39;D&#39;, &#39;E&#39; => &#39;E&#39;,
  &#39;F&#39; => &#39;F&#39;, &#39;G&#39; => &#39;G&#39;, &#39;H&#39; => &#39;H&#39;, &#39;I&#39; => &#39;I&#39;, &#39;J&#39; => &#39;J&#39;,
  &#39;K&#39; => &#39;K&#39;, &#39;L&#39; => &#39;L&#39;, &#39;M&#39; => &#39;M&#39;, &#39;N&#39; => &#39;N&#39;, &#39;O&#39; => &#39;O&#39;,
  &#39;P&#39; => &#39;P&#39;, &#39;Q&#39; => &#39;Q&#39;, &#39;R&#39; => &#39;R&#39;, &#39;S&#39; => &#39;S&#39;, &#39;T&#39; => &#39;T&#39;,
  &#39;U&#39; => &#39;U&#39;, &#39;V&#39; => &#39;V&#39;, &#39;W&#39; => &#39;W&#39;, &#39;X&#39; => &#39;X&#39;, &#39;Y&#39; => &#39;Y&#39;,
  &#39;Z&#39; => &#39;Z&#39;, &#39;a&#39; => &#39;a&#39;, &#39;b&#39; => &#39;b&#39;, &#39;c&#39; => &#39;c&#39;, &#39;d&#39; => &#39;d&#39;,
  &#39;e&#39; => &#39;e&#39;, &#39;f&#39; => &#39;f&#39;, &#39;g&#39; => &#39;g&#39;, &#39;h&#39; => &#39;h&#39;, &#39;i&#39; => &#39;i&#39;,
  &#39;j&#39; => &#39;j&#39;, &#39;k&#39; => &#39;k&#39;, &#39;l&#39; => &#39;l&#39;, &#39;m&#39; => &#39;m&#39;, &#39;n&#39; => &#39;n&#39;,
  &#39;o&#39; => &#39;o&#39;, &#39;p&#39; => &#39;p&#39;, &#39;q&#39; => &#39;q&#39;, &#39;r&#39; => &#39;r&#39;, &#39;s&#39; => &#39;s&#39;,
  &#39;t&#39; => &#39;t&#39;, &#39;u&#39; => &#39;u&#39;, &#39;v&#39; => &#39;v&#39;, &#39;w&#39; => &#39;w&#39;, &#39;x&#39; => &#39;x&#39;,
  &#39;y&#39; => &#39;y&#39;, &#39;z&#39; => &#39;z&#39;,
  &#39;(&#39; => &#39;(&#39;, &#39;)&#39; => &#39;)&#39;, &#39;〔&#39; => &#39;[&#39;, &#39;〕&#39; => &#39;]&#39;, &#39;【&#39; => &#39;[&#39;,
  &#39;】&#39; => &#39;]&#39;, &#39;〖&#39; => &#39;[&#39;, &#39;〗&#39; => &#39;]&#39;, &#39;{&#39; => &#39;{&#39;, &#39;}&#39; => &#39;}&#39;, &#39;《&#39; => &#39;<&#39;,
  &#39;》&#39; => &#39;>&#39;,
  &#39;%&#39; => &#39;%&#39;, &#39;+&#39; => &#39;+&#39;, &#39;—&#39; => &#39;-&#39;, &#39;-&#39; => &#39;-&#39;, &#39;~&#39; => &#39;-&#39;,
  &#39;:&#39; => &#39;:&#39;, &#39;。&#39; => &#39;.&#39;, &#39;、&#39; => &#39;,&#39;, &#39;,&#39; => &#39;.&#39;, &#39;、&#39; => &#39;.&#39;,
  &#39;;&#39; => &#39;;&#39;, &#39;?&#39; => &#39;?&#39;, &#39;!&#39; => &#39;!&#39;, &#39;…&#39; => &#39;-&#39;, &#39;‖&#39; => &#39;|&#39;,
  &#39;”&#39; => &#39;"&#39;, &#39;“&#39; => &#39;"&#39;, &#39;&#39;&#39; => &#39;`&#39;, &#39;‘&#39; => &#39;`&#39;, &#39;|&#39; => &#39;|&#39;, &#39;〃&#39; => &#39;"&#39;,
  &#39; &#39; => &#39; &#39;,&#39;.&#39; => &#39;.&#39;);
 return strtr($str, $arr);
}
 
/**
 * 下载
 * @param [type] $filename [description]
 * @param string $dir  [description]
 * @return [type]   [description]
 */
function downloads($filename,$dir=&#39;./&#39;){
 $filepath = $dir.$filename;
 if (!file_exists($filepath)){
  header("Content-type: text/html; charset=utf-8");
  echo "File not found!";
  exit;
 } else {
  $file = fopen($filepath,"r");
  Header("Content-type: application/octet-stream");
  Header("Accept-Ranges: bytes");
  Header("Accept-Length: ".filesize($filepath));
  Header("Content-Disposition: attachment; filename=".$filename);
  echo fread($file, filesize($filepath));
  fclose($file);
 }
}
 
/**
 * 创建一个目录树
 * @param [type] $dir [description]
 * @param integer $mode [description]
 * @return [type]  [description]
 */
function mkdirs($dir, $mode = 0777) {
 if (!is_dir($dir)) {
  mkdirs(dirname($dir), $mode);
  return mkdir($dir, $mode);
 }
 return true;
}
Nach dem Login kopieren

Das Obige ist eine (praktische) Zusammenfassung sehr praktischer allgemeiner PHP-Funktionen. Weitere verwandte Inhalte finden Sie auf der chinesischen PHP-Website (www.php.cn). !


Verwandte Etiketten:
Quelle:php.cn
Erklärung dieser Website
Der Inhalt dieses Artikels wird freiwillig von Internetnutzern beigesteuert und das Urheberrecht liegt beim ursprünglichen Autor. Diese Website übernimmt keine entsprechende rechtliche Verantwortung. Wenn Sie Inhalte finden, bei denen der Verdacht eines Plagiats oder einer Rechtsverletzung besteht, wenden Sie sich bitte an admin@php.cn
Beliebte Tutorials
Mehr>
Neueste Downloads
Mehr>
Web-Effekte
Quellcode der Website
Website-Materialien
Frontend-Vorlage