1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 | <?php /** * 用于获取远程文件并缓存 * CurlCache v1.0 * Created by cr. * Date: 2015/12/03 */ //namespace vendor\core; class CurlCache { /** * 请求地址 * @var string */ protected $url ; /** * 缓存生存期 * @var int */ protected $expires ; /** * 请求超时 * @var int */ protected $timeOut ; /** * 是否开启缓存 * @var int */ protected $cacheEna ; /** * 是否显示debug信息 * @var bool */ protected $debug ; /** * 其他不用配置的内部属性 */ protected $path ; protected $filename ; protected $curlData ; protected $curlHeader ; protected $curlError ; protected $cacheData ; public $data ; /** * CurlCache constructor. * @param int $expires * @param int $timeOut * @param bool|true $cacheEna * @param bool|false $debug */ public function __construct( $expires =3600, $timeOut =30, $cacheEna =true, $debug =false) { $this ->expires= $expires ; $this ->timeOut= $timeOut ; $this ->cacheEna= $cacheEna ; $this ->debug= $debug ; } /** * 检测并创建目录 * @return bool */ public function mkdirs(){ if ( is_dir ( $this ->path)){ return true; } else { return mkdir ( $this ->path, 777, true); } } /** * 设置缓存文件相关信息 * @param $url */ public function setCacheFileInfo( $url ){ $this ->url= $url ; $this ->path=dirname( __FILE__ ). '/cache/' ; $this ->filename= $this ->url?md5( $this ->url): 'null' ; } /** * 主方法,取得数据 * @param $url * @return bool|string */ public function get( $url ){ $this ->setCacheFileInfo( $url ); if ( $this ->cacheEna) $this ->data=unserialize( $this ->getCache( $url )); if (! $this ->data) $this ->data= $this ->curlGet( $url ); if ( $this ->data && $this ->cacheEna) $this ->setCache( $url ,serialize( $this ->data)); return $this ->data->contents; } /** * curl GET 请求数据 * @param $url * @return string */ public function curlGet( $url ){ if ( $this ->debug && $url == '' ) echo ( '请求URL为空,请检查' ); $return = new stdClass(); $ch = curl_init (); curl_setopt( $ch , CURLOPT_URL, $url ); curl_setopt( $ch , CURLOPT_TIMEOUT, $this ->timeOut); curl_setopt( $ch , CURLOPT_HEADER, 0 ); curl_setopt( $ch , CURLOPT_RETURNTRANSFER, 1 ); curl_setopt( $ch , CURLOPT_FOLLOWLOCATION, 1); $this ->curlData=curl_exec( $ch ); $this ->curlHeader=curl_getinfo( $ch ); $this ->curlError=curl_error( $ch ); $return ->header= $this ->curlHeader; $return ->contents= $this ->curlData; curl_close( $ch ); if ((! $this ->curlData || $this ->curlHeader[ 'http_code' ] != '200' ) && $this ->debug ) echo '请求失败,错误信息:' . $this ->curlError; else return $return ; } /** * 取得缓存数据 * @param $url * @return bool|string */ public function getCache( $url ){ $this ->setCacheFileInfo( $url ); if ( file_exists ( $this ->path. $this ->filename)){ if (time() - filemtime ( $this ->path. $this ->filename) < $this ->expires) $this ->cacheData= file_get_contents ( $this ->path. $this ->filename); else if ( $this ->debug) echo '缓存文件已过期' ; if ( $this ->cacheData) return $this ->cacheData; else if ( $this ->debug) echo '缓存文件内容为空' ; } else { //if($this->debug) echo '缓存文件不存在'; return false; } } /** * 写入缓存数据 * @param $url * @param $data */ public function setCache( $url , $data ){ $this ->setCacheFileInfo( $url ); if (! $this ->mkdirs() && $this ->debug) echo ( '创建缓存目录失败:' . $this ->path); if ( $data ){ if (! file_put_contents ( $this ->path. $this ->filename, $data ) && $this ->debug){ echo '写入缓存失败 File:' . $this ->path. $this ->filename; } } else { if ( $this ->debug) echo '数据为空,不写入缓存' ; } } } |