PHP常见方法封装总结

1.get请求

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function get_curl( $url , $timeout = 5) {      $ch = curl_init();      curl_setopt( $ch ,CURLOPT_URL, $url );      curl_setopt( $ch ,CURLOPT_RETURNTRANSFER,true );      curl_setopt( $ch , CURLOPT_SSL_VERIFYHOST, 0);      curl_setopt( $ch , CURLOPT_SSL_VERIFYPEER, false);      curl_setopt( $ch , CURLOPT_TIMEOUT, $timeout );      $result = curl_exec( $ch );      curl_close( $ch );      return $result ; }

2.post请求

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function post_curl( $url , $data , $timeout = 5) {      $ch = curl_init();      curl_setopt( $ch ,CURLOPT_URL, $url );      curl_setopt( $ch ,CURLOPT_RETURNTRANSFER,true );      curl_setopt( $ch , CURLOPT_SSL_VERIFYHOST, 0);      curl_setopt( $ch , CURLOPT_SSL_VERIFYPEER, false);      curl_setopt( $ch , CURLOPT_TIMEOUT, $timeout );      curl_setopt( $ch , CURLOPT_POST, true);      curl_setopt( $ch ,CURLOPT_POSTFIELDS, $data );      $result = curl_exec( $ch );      curl_close( $ch );      return $result ; }

3.随机字符串

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function random_str( $len =10, $type =1){      switch ( $type ){          case 2:              $chars = '0123456789' ;              break ;          case 3:              $chars = 'abcdefghijklmnopqrstuvwxyz' ;              break ;          case 4:              $chars = 'ABDEFGHIJKLMNOPQRSTUVWXYZ' ;              break ;          case 5:              $chars = 'abcdefghijklmnopqrstuvwxyzABDEFGHIJKLMNOPQRSTUVWXYZ' ;              break ;          case 6:              $chars = 'abcdefghijklmnopqrstuvwxyz0123456789' ;              break ;          default :              $chars = 'abcdefghijklmnopqrstuvwxyzABDEFGHIJKLMNOPQRSTUVWXYZ0123456789' ;              break ;      }        $str = '' ;      for ( $i = 0; $i < $len ; $i ++ ){          $str .= $chars [ mt_rand(0, strlen ( $chars ) - 1) ];      }      return $str ; }

4.返回json数据

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function json_back( $data , $is_exit = true) {      $callback = $_GET [ 'callback' ] ?? '' ;      if ( $callback ) {          echo '' . $callback . "(" . json_encode( $data , JSON_UNESCAPED_UNICODE) . ")" ;      } else {          echo json_encode( $data , JSON_UNESCAPED_UNICODE);      }      if ( $is_exit ) exit (); }

5.数据过滤

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function check_data( $data ){      if ( is_array ( $data )){          foreach ( $data as $key => $v ){              $data [ $key ] = $this ->check_data( $v );          }      } else {          $data = trim( $data );          $data = strip_tags ( $data );          $data = htmlspecialchars( $data );          $data = addslashes ( $data );      }      return $data ; }

6.重定向

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function redirect( $url = 'https://blog.csdn.net/weixin_41635750' ){      if (!headers_sent()) {          header( "Location: {$url}" );          exit ();      } else {          $str = "<meta http-equiv='Refresh' content='0;URL={$url}'>" ;          exit ( $str );      } }

7.获取客户端ip

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function get_real_ip() {      if (@ $_SERVER [ "HTTP_ALI_CDN_REAL_IP" ]){          $ip = $_SERVER [ "HTTP_ALI_CDN_REAL_IP" ];      }      elseif (@ $_SERVER [ "HTTP_X_FORWARDED_FOR" ] ?: false) {          $ip  = $_SERVER [ "HTTP_X_FORWARDED_FOR" ];          $ips = explode ( ',' , $ip );          $ip  = $ips [0];      } elseif (@ $_SERVER [ "HTTP_CDN_SRC_IP" ] ?: false) {          $ip = $_SERVER [ "HTTP_CDN_SRC_IP" ];      } elseif ( getenv ( 'HTTP_CLIENT_IP' )) {          $ip = getenv ( 'HTTP_CLIENT_IP' );      } elseif ( getenv ( 'HTTP_X_FORWARDED' )) {          $ip = getenv ( 'HTTP_X_FORWARDED' );      } elseif ( getenv ( 'HTTP_FORWARDED_FOR' )) {          $ip = getenv ( 'HTTP_FORWARDED_FOR' );      } elseif ( getenv ( 'HTTP_FORWARDED' )) {          $ip = getenv ( 'HTTP_FORWARDED' );      } else {          $ip = $_SERVER [ 'REMOTE_ADDR' ];      }      $ip = str_replace ( array ( '::ffff:' , '[' , ']' ), array ( '' , '' , '' ), $ip );        return $ip ; }

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原文链接：https://mp.weixin.qq.com/s/iEJjZLsKdMb3bSwWJbmTTw