php 常用功能

function curl_get_page($url){

    //初始化

    $ch = curl_init();

   //设置选项，包括url

     curl_setopt($ch, CURLOPT_URL, $url);

     curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
     curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,FALSE);
     curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,FALSE);
     curl_setopt($ch,CURLOPT_FOLLOWLOCATION,1);
     curl_setopt($ch,CURLOPT_AUTOREFERER,1);
     curl_setopt($ch, CURLOPT_HEADER, 0);

    //执行并获取html内容

     $output = curl_exec($ch);

   //释放curl句柄

    curl_close($ch);

    return $output ;
}

private function curl_post_page( $url , $data , $timeout = 4 ) {
$ch = curl_init (); curl_setopt ( $ch , CURLOPT_URL , $url );
curl_setopt ( $ch , CURLOPT_CUSTOMREQUEST , "POST" );
curl_setopt ( $ch , CURLOPT_SSL_VERIFYPEER , FALSE );
curl_setopt ( $ch , CURLOPT_SSL_VERIFYHOST , FALSE );
curl_setopt ( $ch , CURLOPT_FOLLOWLOCATION , 1 );
curl_setopt ( $ch , CURLOPT_AUTOREFERER , 1 );
  curl_setopt ( $ch , CURLOPT_POSTFIELDS , $data );
curl_setopt ( $ch , CURLOPT_RETURNTRANSFER , true );
$output = curl_exec ( $ch );
if ( curl_errno ( $ch )){
echo curl_error ( $ch );
} return $output ;
}

// 自己包装的 post 方法
private function httpPost 接口 ( $url , $post = null ){
$context = array ();
if (! is_array ( $post )) return false ;
ksort ( $post );
$context [ 'http' ] = array ( 'timeout' => 60 , 'method' => 'POST' , 'content' => http_build_query ( $post , '' , '&' ));
return file_get_contents ( $url , false , stream_context_create ( $context ) ); }
// 自己包装的 get 方法 private function httpGet 接口 ( $url ){
  $opts = array ( 'http' => array ( 'method' => "GET" , 'timeout' => 15 ,));
  $context = @ stream_context_create ( $opts ); $
result = @ file_get_contents ( $url , false , $context );
  return $result ; }
/**************************************************************
* * 自己包装 将数组转换为 JSON 字符串（兼容中文）
* @param array $array 要转换的数组
* @return string 转换得到的 json 字符串
* @access public *
*************************************************************/
public function fJSON 返回 ( $array ) {
$this ->arrayRecursive( $array , 'urlencode' , true );
$json = json_encode( $array );
return urldecode ( $json ); }
// 自己包装 将返回数据拼装成数组
private function f 组装返回数组 ( $Result , $ErrorStr , $ResultData ){
$return 值 = array (
"Result" => $Result ,
"ErrorStr" => $ErrorStr ,
"ResultData" => $ResultData
);
return $return 值 ;
}
/************************************************************** *
* 自己拼装 使用特定 function 对数组中所有元素做处理
* @param string &$array 要处理的字符串
* @param string $function 要执行的函数
* @return boolean $apply_to_keys_also 是否也应用到 key 上
* @access public *
*************************************************************/
private function arrayRecursive(& $array , $function , $apply_to_keys_also = false ) {
static $recursive_counter = 0 ;
if (++ $recursive_counter > 1000 )
{
die ( 'possible deep recursion attack' );
} foreach ( $array as $key => $value ) {
  if ( is_array ( $value )) {
$this ->arrayRecursive( $array [ $key ], $function , $apply_to_keys_also );
} else {
$array [ $key ] = $function ( $value );
}
if ( $apply_to_keys_also && is_string ( $key )) {
$new_key = $function ( $key );
  if ( $new_key != $key ) {
$array [ $new_key ] = $array [ $key ];
  unset ( $array [ $key ]);
}
}
}
$recursive_counter --;
}

public function fs 随机字符串 ( $length ){
$str = null ;
$strPol = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz" ;
$max = strlen ( $strPol )- 1 ;
for ( $i = 0 ; $i < $length ; $i ++){
$str .= $strPol [ rand ( 0 , $max )]; //rand($min,$max) 生成介于 min 和 max 两个数之间的一个随机整数
}
return $str ;
}