如果API用戶無法做得更好，那麼他比較適合使用 unchecked 異常。條款42：儘量使用Standard exceptions
「選擇使用哪一種異常」並不是一種精確科學，因為並不互斥
ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/)來表達，具不可讀性jQuery.extend( {
add:functioin(a,b){
return a+b;
}
});alert($.add(5,3)); //print 8
jQuery.fn.extend({
color: function (val)
{
if (val == undefined){
return $( this ).css( "color" );
} else {
return $( this ).css( "color" , val);
}
}
}) );$("input").color("red")); //所有input都是紅字//1.一般function寫法
function method1(m){alert(m);}
//2.暱名function，需有變數接
var method2 = (function(m){alert(m);})
method2("Hello");
//3.直接傳參數進暱名function呼叫
(function(m){alert(m);})("Hello")class LoggerAppenderFirePHP extends LoggerAppender {
...
public function append(LoggerLoggingEvent $event) {
if($this->layout !== null)
return;
$ci = & get_instance();
$level = $event->getLevel();
if($level->isGreaterOrEqual(LoggerLevel::getLevelError())) {
$ci->fb->error($this->layout->format($event));
} else if ($level->isGreaterOrEqual(LoggerLevel::getLevelWarn())) {
$ci->fb->warn($this->layout->format($event));
} else {
$ci->fb->info($this->layout->format($event));
}
}
}
<configuration xmlns="http://logging.apache.org/log4php/">
<appender name="firephp" class="LoggerAppenderFirePHP">
<layout class="LoggerLayoutPattern">
<param name="ConversionPattern" value="%m"/>
</layout>
</appender>
<root>
<appender_ref ref="firephp" />
</root>
</configuration>
$this->load->library('Log4php');
$this->log4php->log('info',"[behavior] info");
$this->log4php->log('error',"error");
$this->log4php->log('warn',"warn");
$memcache = new Memcache;
$memcache->connect('127.0.0.1', 11211) or die ("Could not connect"); //connect to memcached server
$mydata = "i want to cache this line"; //your cacheble data
$memcache->set('key', $mydata, false, 100); //add it to memcached server $get_result = $memcache->get('key'); //retrieve your data
var_dump($get_result); //show it| 避免使用 | 建議使用 |
|---|---|
| gets() | fget() |
| strcpy() | strncpy() |
| stract() | strncat() |
<VirtualHost *:443> SSLCertificateFile /etc/pki/tls/certs/aa_com.crt SSLCertificateKeyFile /etc/pki/tls/private/aa_com.key SSLCertificateChainFile /etc/pki/tls/certs/aa_com.ca-bundle </VirtualHost> <VirtualHost *:443> SSLCertificateFile /etc/pki/tls/certs/host_aa_com.crt SSLCertificateKeyFile /etc/pki/tls/private/host_aa_com.key SSLCertificateChainFile /etc/pki/tls/certs/host_aa_com.ca-bundle </VirtualHost>
SSLCertificateFile /etc/pki/tls/certs/YOUR_WEBSITE.crt SSLCertificateKeyFile /etc/pki/tls/private/YOUR_WEBSITE.key SSLCertificateChainFile /etc/pki/tls/certs/YOUR_WEBSITE.ca-bundle
<script type="text/javascript">
var win = window.open("secondwindow.html", "_blank");
win.onunload =onun;
function onun() {
if(win.location != "about:blank") // This is so that the function
// doesn't do anything when the
// window is first opened.
{
alert("closed");
}
}
</script>
var child = window.open('http://google.com','','toolbar=0,status=0,width=626,height=436');
var timer = setInterval(checkChild, 500);
function checkChild() {
if (child.closed) {
alert("Child window closed");
clearInterval(timer);
}
}
select * from table where to_days(column_time) = to_days(now()); select * from table where date(column_time) = curdate();
WHERE (created BETWEEN '2012-06-19' and '2012-06-30 23:59:59' );
WHERE DATE_SUB( CURDATE( ) , INTERVAL 7 DAY ) <= `created_date`; WHERE DATE_SUB(CURDATE(), INTERVAL INTERVAL 1 MONTH) <= `created_date`;
select * from wap_content where week(created_at) = week(now);
用linux本身的wc指令也可達到效果
wc -l *.log
$url = 'http://username:password@hostname/path?arg=value#anchor';
$urlinfo = parse_url($url);
------------------------
Array
(
[scheme] => http
[host] => hostname
[user] => username
[pass] => password
[path] => /path
[query] => arg=value
[fragment] => anchor
)
$str = "first=value&arr[]=foo+bar&arr[]=baz"; parse_str($str); echo $first; // value echo $arr[0]; // foo bar echo $arr[1]; // baz parse_str($str, $output); echo $output['first']; // value echo $output['arr'][0]; // foo bar echo $output['arr'][1]; // baz
感謝Dockerfile等工具... 以後這些都可以不用理了...
export TERM=screen-256color #註1
# General configuration.
# $ tmux show-options -g
set -g base-index 1
set -g display-time 5000
set -g repeat-time 1000
set -g status-keys vi
set -g status-utf8 on
set -g status-bg black
set -g status-fg white
set -g status-justify left
set -g status-interval 1
set -g status-left-length 15
set -g status-right-length 55
set -g status-left "#[fg=white,bright] #[fg=yellow,bright]#S #[default] |" # session-name
set -g status-right "#[fg=red,bright][ #[fg=cyan]#(git branch --no-color | sed -e '/^[^*]/d' -e 's/* //') #[fg=red]]#[default] #[fg=yellow,bright] %Y-%m-%d #[fg=green]%H:%M:%S #[default]#[fg=magenta,bright]#[default]"
# window setting
setw -g utf8 on
setw -g window-status-format " [#I] #W "
setw -g window-status-current-format " [#I] #W "
setw -g window-status-current-fg black
setw -g window-status-current-bg green
setw -g window-status-current-attr default
# using function keyCtrl+A
unbind C-b
set -g prefix ^A
bind a send-prefix
# split window
unbind %
unbind '"'
bind v split-window -h
bind | split-window -h
bind h split-window -v
bind - split-window -v
tmux source-file ~/.tmux.confdate("Y-m-d H:i:s", $timestamp);function toXml($data = array(), $structure = NULL, $basenode = 'xml'){
// turn off compatibility mode as simple xml throws a wobbly if you don't.
if (ini_get('zend.ze1_compatibility_mode') == 1)
{
ini_set('zend.ze1_compatibility_mode', 0);
}
if ($structure == NULL)
{
$structure = simplexml_load_string("<?xml version='1.0' encoding='utf-8'?><$basenode />");
}
// loop through the data passed in.
$data = $this->_force_loopable($data);
foreach ($data as $key => $value)
{
// no numeric keys in our xml please!
if (is_numeric($key))
{
// make string key...
//$key = "item_". (string) $key;
$key = "item";
}
// replace anything not alpha numeric
$key = preg_replace('/[^a-z_]/i', '', $key);
// if there is another array found recrusively call this function
if (is_array($value) OR is_object($value))
{
$node = $structure->addChild($key);
// recrusive call.
$this->_format_xml($value, $node, $basenode);
}
else
{
// Actual boolean values need to be converted to numbers
is_bool($value) AND $value = (int) $value;
// add single node.
$value = htmlspecialchars(html_entity_decode($value, ENT_QUOTES, 'UTF-8'), ENT_QUOTES, "UTF-8");
$UsedKeys[] = $key;
$structure->addChild($key, $value);
}
}
// pass back as string. or simple xml object if you want!
return $structure->asXML();
}
function _force_loopable($data){
// Force it to be something useful
if ( ! is_array($data) AND ! is_object($data))
{
$data = (array) $data;
}
return $data;
}
$array = array(...);
header('Content-type: application/xml;charset=utf-8');
exit(toXml($array)) ;
//給header用
$_supported_formats = array(
'xml' => 'application/xml',
'rawxml' => 'application/xml',
'json' => 'application/json',
'jsonp' => 'application/javascript',
'serialize' => 'application/vnd.php.serialized',
'php' => 'text/plain',
'html' => 'text/html',
'csv' => 'application/csv'
);
function response($data, $format = 'json'){
header('Content-type: '.$this->_supported_formats[$format]);
switch (strtolower($format)){
case 'xml':
exit($this->toXml($data));
case 'json':
default:
exit(json_encode($data));
}
}//檢查json是否存在
if (typeof (JSON) == 'undefined') { //沒有 JSON 時才讓 browser 下載 json2.js
$('head').append($("<script src="json2.js" type="text/javascript">
));
\033[ -> Indicates the beginning of color in the text x;yzm - Indicates color code \033[00m - Indicates the end of color in the text
| Bash special character | Bash special character explanation | Bash special character | Bash special character explanation |
|---|---|---|---|
| \] | end a sequence of non-printing characters | \[ | begin a sequence of non-printing characters, which could be used to embed a terminal control sequence into the prompt |
| \h | the hostname up to the first `.' | \H | the hostname |
| \s | the name of the shell, the basename of $0 (the portion following the final slash) | \l | the basename of the shell's terminal device name |
| \$ | if the effective UID is 0, a #, otherwise a $ | \u | the username of the current user |
| \w | the current working directory | \W | the basename of the current working directory |
| \D{format} | the format is passed to strftime(3) and the result is inserted into the prompt string; an empty format results in a locale-specific time representation. The braces are required | ||
#prompt
if [ $TERM = 'xterm' ]
then
PS1='\e[0;32m[\[\033[02;32m\]\u@\h\[\033[01;34m\] \w\e[0;32m]\$\e[m '
else
PS1='[\u@\h \w] \$ # '
fi
# colorful man page
export PAGER="`which less` -s"
export BROWSER="$PAGER"
export LESS_TERMCAP_mb=$'\E[01;36m'
export LESS_TERMCAP_md=$'\E[01;36m'
export LESS_TERMCAP_me=$'\E[0m'
export LESS_TERMCAP_se=$'\E[0m'
export LESS_TERMCAP_so=$'\E[01;44;33m'
export LESS_TERMCAP_ue=$'\E[0m'
export LESS_TERMCAP_us=$'\E[01;33m'
wget -q -O - checkip.dyndns.org|sed -e 's/.*Current IP Address: //' -e 's/<.*$//'
curl -s checkip.dyndns.org|sed -e 's/.*Current IP Address: //' -e 's/<.*$//' curl -s http://whatismyip.org/
lynx -dump checkip.dyndns.org lynx -dump www.whatismyip.com | grep 'Your IP'
//增加一個在github的remote git remote add github https://github.com/username/Hello-World.git //origin也視成一個remote,所以一樣的方法，只是叫origin git remote add origin https://github.com/username/Hello-World.git
#git branch * master
#git branch check * master
#git fetch origin check:check
HttpContext.Current.Response.AddHeader("p3p", "CP=\""IDC DSP COR ADM DEVi TAIi PSA PSD IVAi IVDi CONi HIS OUR IND CNT\""")header('P3P:CP="IDC DSP COR ADM DEVi TAIi PSA PSD IVAi IVDi CONi HIS OUR IND CNT"');response.setHeader("P3P","CP='IDC DSP COR ADM DEVi TAIi PSA PSD IVAi IVDi CONi HIS OUR IND CNT'")<cfheader name="P3P" value="CP='IDC DSP COR ADM DEVi TAIi PSA PSD IVAi IVDi CONi HIS OUR IND CNT'">
error_reporting(0); // Turn off all error reporting
ini_set('error_reporting', E_ALL); // Same as error_reporting(E_ALL);//log to file
ini_set('error_log', dirname(__FILE__) . '/error_log.txt');
// Send notification through the server log if we can not
// connect to the database.
if (!Ora_Logon($username, $password)) {
error_log("Oracle database not available!", 0);
}
// Notify administrator by email if we run out of FOO
if (!($foo = allocate_new_foo())) {
error_log("Big trouble, we're all out of FOOs!", 1,
"operator@example.com");
}
// another way to call error_log():
error_log("You messed up!", 3, "/var/tmp/my-errors.log");
trigger_error("Notice Message",E_USER_NOTICE);
trigger_error("Warning Message",E_USER_WARNING);
trigger_error("Error Message",E_USER_ERROR);display_errors = On
ini_set('display_errors', 1); //turn on display error on screen
ini_set('log_errors', 1); //turn on log error
error_reporting(E_ALL); //log all errors and warnings| Constant | Description | Note |
|---|---|---|
| E_NOTICE | Run-time notices. Indicate that the script encountered something that could indicate an error, but could also happen in the normal course of running a script. | |
| E_STRICT | Enable to have PHP suggest changes to your code which will ensure the best interoperability and forward compatibility of your code. | Since PHP 5 but not included in E_ALL until PHP 5.4.0 |
| E_ALL | All errors and warnings, as supported, except of level E_STRICT prior to PHP 5.4.0. |
$this->scramble1 = '! #$%&()*+,-./0123456789:;>=<?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[]^_`abcdefghijklmnopqrstuvwxyz{|}~';
$this->scramble2 = 'f^jAE]okIOzU[2&q1{3`h5w_794p@6s8?BgP<dFV=m D>TcS%Ze|r:lGK/uCy.Jx)HiQ!#$~(;Lt-R}Ma,NvW+Ynb*0X';<?php include 'encryption_class.php'; $crypt = new encryption_class(); $key = "A-COMPLETELY-RANDOM-KEY-THAT-I-HAVE-USED"; // Min length of 8 for encrypted string $min_length = 8; $order_id = 123456789; print "Original: " . $order_id . PHP_EOL; $encrypt_result = $crypt->encrypt($key, $order_id, $min_length); print "Encrypted: " . $encrypt_result . PHP_EOL; // DECRYPT $decrypt_result = $crypt->decrypt($key, $encrypt_result); print "Decrypted: " . $decrypt_result . PHP_EOL; ?>
$numeric_cipher='';
for($i=0;$i<strlen($decrypt_result);$i++){
$numeric_cipher .= str_pad(ord(substr($decrypt_result,$i,1)),3,'0',STR_PAD_LEFT); //不到3碼，左邊補0至3碼
}
//把scramble改成如下，不要重覆，順序可亂擺，不要一樣就好 $this->scramble1 = '0123456789'; $this->scramble2 = '2135794680';
//key可隨意變化，但key的值一定要出現在scramble裡 $key='1234534567890'; $key='11223344'; $key='68490'; $min_length = strlen($order_id); //因為1對1，所以不能超過order id的長度
| Original | Encrypted | Decrypted |
|---|---|---|
| 1 | 5 | 1 |
| 7 | 0 | |
| 11 | 50 | 11 |
| 99 | 19 | 99 |
| 100 | 583 | 100 |
| 101 | 585 | 101 |
| 110 | 505 | 110 |
| 111 | 507 | 111 |
function encrypt(){
...
//$source = str_pad($source, $sourcelen); //原作法
$source = str_pad($source, $sourcelen, '0', STR_PAD_LEFT); //新的作法
...
# rpm -ivh oracle-instantclient11.2-basic-11.2.0.3.0-1.x86_64.rpm # rpm -ivh oracle-instantclient11.2-devel-11.2.0.3.0-1.x86_64.rpm
export ORACLE_HOME=/usr/lib/oracle/11.2/client64 export ORACLE_OWNER=oracle export ORACLE_SID=ora1 export LD_LIBRARY_PATH=$ORACLE_HOME/lib export PATH=$ORACLE_HOME/bin:$PATH export TNS_ADMIN=$ORACLE_HOME/network/admin export NLS_LANG="AMERICAN_AMERICA.AL32UTF8"啟動環境變數
# unzip oracle-instantclient11.2-sdk-11.2.0.1.0-1.x86_64.zip # cp -fr instantclient_11_2/sdk/include/* /usr/include
Installing OCI8 from PECL
<?php
$option = array(
'ip' => '10.0.3.20',
'port' => '15210',
'account' => 'web',
'password' => 'FEF00CB',
'service_name' => 'WXS4'
);
$db = "(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST={$option['ip']})(PORT={$option['port']}))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME={$option['service_name']})))";
if(function_exists('ocilogon')){
$c1 = ocilogon($option['account'],$option['password'],$db) or die('OCI Connect error, wrong connection string');
echo 'OCI Connect pass. yes!!!';
}else{
echo 'ocilogon not exists, installment is not correct';
}set -g default-terminal "screen-256color"
$db['default']['db_debug'] = TRUE;
$this->db->db_debug = false;
$this->db->_error_message();
function insert_quiet($table = ‘’, $set = NULL)
{
$oldv =$this->db_debug;
$this->db_debug = false;
$this->insert($table, $set);
$e = $this->_error_message();
$aff = $this->affected_rows();
$this->db_debug = $oldv;
if($aff < 1) {
return($e);
} else {
return(true);
}
}