1.去除字符串中的所有空格，包括全角中文空格

$key =preg_replace("/\s|　/","",$key);

2.正则提取

$contents="var hintWordArr =1234567;";
preg_match_all("|var hintWordArr =(.*?);|U",$contents,$xgArr);
print_r($xgArr);

3.字符串加密与解密

//http://tu.139zhuti.com/show3.php?p=
$t = 'http://img.bzcm.net/news/attachement/jpg/site2/20131202/842b2b97e020140610f901.JPG';
$k = '125896348';function passport_encrypt($txt, $key) { srand((double)microtime() * 1000000); $encrypt_key = md5(rand(0, 32000)); $ctr = 0; $tmp = ''; for($i = 0;$i < strlen($txt); $i++) { $ctr = $ctr == strlen($encrypt_key) ? 0 : $ctr; $tmp .= $encrypt_key[$ctr].($txt[$i] ^ $encrypt_key[$ctr++]); } return base64_encode(passport_key($tmp, $key));
}function passport_decrypt($txt, $key) { $txt = passport_key(base64_decode($txt), $key); $tmp = ''; for($i = 0;$i < strlen($txt); $i++) { $md5 = $txt[$i]; $tmp .= $txt[++$i] ^ $md5; } return $tmp;
}function passport_key($txt, $encrypt_key) { $encrypt_key = md5($encrypt_key); $ctr = 0; $tmp = ''; for($i = 0; $i < strlen($txt); $i++) { $ctr = $ctr == strlen($encrypt_key) ? 0 : $ctr; $tmp .= $txt[$i] ^ $encrypt_key[$ctr++]; } return $tmp;
}
$e = passport_encrypt($t,$k);
$e = 'VzoHegkmB3BQPgYrUy9QPgVqVDIBJgI2BmNWfgNnVzoHbwQiAC4CdQU9Uj9UZgRnUXwBaQNnAmFQZVMwUSVRfFdgBz4JYwczUCsGNVMyUHgFN1RhAScCMQZnVmgDMldkBzMEOgBtAjIFaVIPVDUEMlFnATADPwI1UDJTZlFvUWZXfAdkCSIHZw==';echo $e;
echo "<br>";
echo passport_decrypt($e,$k);

4.CURL的POST

class HttpUtil {public static function post($url, $data) {$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($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (compatible; MSIE 5.01; Windows NT 5.0)');curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);curl_setopt($ch, CURLOPT_AUTOREFERER, 1);curl_setopt($ch, CURLOPT_POSTFIELDS, $data);curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);$tmpInfo = curl_exec($ch);if (curl_errno($ch)) {return false;}curl_close($ch);return $tmpInfo;}
}

5.字符编码转换

$str=mb_convert_encoding($str, "utf-8", "gbk");//将原来是gbk的字符转换成utf-8

6.生成本地缓存

ob_start();
//print_r($data);
$datastr = ob_get_contents();
ob_clean();
file_put_contents("/home/wwwroot/html/test.html",$datastr);