为PHP环境增加缓存加速插件-Zend Opcache

为PHP环境增加缓存加速插件-Zend Opcache
目前PHP的缓存插件一般有三个：APC、eAccelerator、XCache，但未来它们可能都会消失，因为PHP 5.5已经集成ZendOpcache，功能和前三者相似但又有少许不同，缓存速度据说比它们更快（注意：只是据说，我没测试过）。

这几个PHP加速插件的主要原理都相同，就是把PHP执行后的数据缓冲到内存中从而避免重复的编译过程，能够直接使用缓冲区已编译的代码从而提高速度，降低服务器负载，它们的效率是显而易见的，像drupal这种庞大的CMS，每次打开一个页面要调用数十个PHP文件，执行数万行代码，效率可想而知，在安装APC等加速器后打开页面的速度明显加快。

Zend Opcache 已经集成在了PHP 5.5里面，编译安装PHP5.5的时候加上--enable-opcache就行了。但也支持低版本的 PHP 5.2.*, 5.3.*, 5.4.*，未来会取消对5.2的支持，下面是我在PHP 5.3下的安装方法：
官方网站：http://pecl.php.net/package/ZendOpcache

1.获得源码：wget http://pecl.php.net/get/zendopcache-7.0.3.tgz
2.解压源码包：tar -zxvf zendopcache-7.0.3.tgz
3.进入目录：cd zendopcache-7.0.3
4.扩展PHP模块：/usr/local/lnmp/php5/bin/phpize
5.指定配置参数：./configure --with-php-config=/usr/local/lnmp/php5/bin/php-config
6.编译：Make
7.安装：Make install
8.集成到PHP环境：在php.ini最后新加以下参数
[Opcache]
zend_extension=/usr/local/lnmp/php5/lib/php/extensions/no-debug-non-zts-20100525/opcache.so
opcache.memory_consumption=128
opcache.interned_strings_buffer=8
opcache.max_accelerated_files=4000
opcache.revalidate_freq=60
opcache.fast_shutdown=1kill -USR2 23887
opcache.enable_cli=1

9.平滑重启PHP：kill -USR2 (php-fpm master pid)
10.测试：写一个demo检测
  1 <?php
  2 /*
  3 OCP - Opcache Control Panel (aka Zend Optimizer+ Control Panel for PHP)
  4 Author: _ck_ (with contributions by GK, stasilok)
  5 Version: 0.1.6
  6 Free for any kind of use or modification, I am not responsible for anything, please share your improvements
  7 
  8 * revision history
  9 0.1.6 2013-04-12 moved meta to footer so graphs can be higher and reduce clutter
 10 0.1.5 2013-04-12 added graphs to visualize cache state, please report any browser/style bugs
 11 0.1.4 2013-04-09 added "recheck" to update files when using large revalidate_freq (or validate_timestamps=Off)
 12 0.1.3 2013-03-30 show host and php version, can bookmark with hashtag ie. #statistics - needs new layout asap
 13 0.1.2 2013-03-25 show optimization levels, number formatting, support for start_time in 7.0.2
 14 0.1.1 2013-03-18 today Zend completely renamed Optimizer+ to OPcache, adjusted OCP to keep working
 15 0.1.0 2013-03-17 added group/sort indicators, replaced "accelerator_" functions with "opcache_"
 16 0.0.6 2013-03-16 transition support as Zend renames product and functions for PHP 5.5 (stasilok)
 17 0.0.5 2013-03-10 added refresh button (GK)
 18 0.0.4 2013-02-18 added file grouping and sorting (click on headers) - code needs cleanup but gets the job done
 19 0.0.2 2013-02-14 first public release
 20 
 21 * known problems/limitations:
 22 Unlike APC, the Zend OPcache API
 23 - cannot determine when a file was put into the cache
 24 - cannot change settings on the fly
 25 - cannot protect opcache functions by restricting execution to only specific scripts/paths
 26 
 27 * todo:
 28 Extract variables for prefered ordering and better layout instead of just dumping into tables
 29 File list filter
 30 
 31 */
 32 
 33 // ini_set('display_errors',1); error_reporting(-1);
 34 if ( count(get_included_files())>1 || php_sapi_name()=='cli' || empty($_SERVER['REMOTE_ADDR']) ) { die; } // weak block against indirect access
 35 
 36 $time=time();
 37 define('CACHEPREFIX',function_exists('opcache_reset')?'opcache_':(function_exists('accelerator_reset')?'accelerator_':''));
 38 
 39 if ( !empty($_GET['RESET']) ) {   
 40 if ( function_exists(CACHEPREFIX.'reset') ) { call_user_func(CACHEPREFIX.'reset'); }
 41 header( 'Location: '.str_replace('?'.$_SERVER['QUERY_STRING'],'',$_SERVER['REQUEST_URI']) );
 42 exit;
 43 }
 44 
 45 if ( !empty($_GET['RECHECK']) ) {
 46 if ( function_exists(CACHEPREFIX.'invalidate') ) {
 47 $recheck=trim($_GET['RECHECK']); $files=call_user_func(CACHEPREFIX.'get_status');
 48 if (!empty($files['scripts'])) {
 49 foreach ($files['scripts'] as $file=>$value) {
 50 if ( $recheck==='1' || strpos($file,$recheck)===0 ) call_user_func(CACHEPREFIX.'invalidate',$file);
 51 }
 52 }
 53 header( 'Location: '.str_replace('?'.$_SERVER['QUERY_STRING'],'',$_SERVER['REQUEST_URI']) );
 54 } else { echo 'Sorry, this feature requires Zend Opcache newer than April 8th 2013'; }
 55 exit;
 56 }
 57 
 58 ?><!DOCTYPE html>
 59 <html>
 60 <head>
 61 <title>OCP - Opcache Control Panel</title>
 62 <meta name="ROBOTS" content="NOINDEX,NOFOLLOW,NOARCHIVE" />
 63 
 64 <style type="text/css">
 65 body { color: #000;}
 66 body, td, th, h1, h2 {font-family: sans-serif;}
 67 pre {margin: 0px; font-family: monospace;}
 68 a:link,a:visited {color: #000099; text-decoration: none;}
 69 a:hover {text-decoration: underline;}
 70 table {border-collapse: collapse;  600px; }
 71 .center {text-align: center;}
 72 .center table { margin-left: auto; margin-right: auto; text-align: left;}
 73 .center th { text-align: center !important; }
 74 .middle {vertical-align:middle;}
 75 td, th { border: 1px solid #000; font-size: 75%; vertical-align: baseline; padding: 3px; }
 76 h1 {font-size: 150%;}
 77 h2 {font-size: 125%;}
 78 .p {text-align: left;}
 79 .e { font-weight: bold; color: #000; 50%; white-space:nowrap;}
 80 .h { font-weight: bold; color: #000;}
 81 .v { color: #000;}
 82 .vr { text-align: right; color: #000; white-space: nowrap;}
 83 .b {font-weight:bold;}
 84 .white, .white a {color:#fff;}
 85 img {float: right; border: 0px;}
 86 hr { 600px; border: 0px; height: 1px; color: #000;}
 87 .meta, .small {font-size: 75%; }
 88 .meta {margin: 2em 0;}
 89 .meta a, th a {padding: 10px; white-space:nowrap; }
 90 .buttons {margin:0 0 1em;}
 91 .buttons a {margin:0 15px; color:#fff; text-decoration:none; padding:1px; border:1px solid #000; display:inline-block; 5em; text-align:center;}
 92 #files td.v a {font-weight:bold; color:#9999cc; margin:0 10px 0 5px; text-decoration:none; font-size:120%;}
 93 #files td.v a:hover {font-weight:bold; color:#ee0000;}
 94 .graph {display:inline-block; 145px; margin:1em 0 1em 1px; border:0; vertical-align:top;}
 95 .graph table {100%; height:150px; border:0; padding:0; margin:5px 0 0 0; position:relative;}
 96 .graph td {vertical-align:middle; border:0; padding:0 0 0 5px;}
 97 .graph .bar {25px; text-align:right; padding:0 2px; color:#fff;}
 98 .graph .total {34px; text-align:center; padding:0 5px 0 0;}
 99 .graph .total div {border:1px dashed #888; border-right:0; height:99%; 12px; position:absolute; bottom:0; left:17px; z-index:-1;}
100 .graph .total span {background:#fff; font-weight:bold;}
101 .graph .actual {text-align:right; font-weight:bold; padding:0 5px 0 0;}
102 .graph .red {background:#ee0000;}
103 .graph .green {background:#00cc00;}
104 .graph .brown {background:#8B4513;}
105 </style>
106 <!--[if lt IE 9]><script type="text/javascript" defer="defer">
107 window.onload=function(){var i,t=document.getElementsByTagName('table');for(i=0;i<t.length;i++){if(t[i].parentNode.className=='graph')t[i].style.height=150-(t[i].clientHeight-150)+'px';}}
108 </script><![endif]-->
109 </head>
110 
111 <body>
112 <div class="center">
113 
114 <h1><a href="?">Opcache Control Panel</a></h1>
115 
116 <div class="buttons">
117 <a href="?ALL=1">Details</a>
118 <a href="?FILES=1&GROUP=2&SORT=3">Files</a>
119 <a href="?RESET=1" onclick="return confirm('RESET cache ?')">Reset</a>
120 <?php if ( function_exists(CACHEPREFIX.'invalidate') ) { ?>
121 <a href="?RECHECK=1" onclick="return confirm('Recheck all files in the cache ?')">Recheck</a>
122 <?php } ?>
123 <a href="?" onclick="window.location.reload(true); return false">Refresh</a>
124 </div>
125 
126 <?php
127 
128 if ( !function_exists(CACHEPREFIX.'get_status') ) { echo '<h2>Opcache not detected?</h2>'; die; }
129 
130 if ( !empty($_GET['FILES']) ) { echo '<h2>files cached</h2>'; files_display(); echo '</div></body></html>'; exit; }
131 
132 if ( !(isset($_REQUEST['GRAPHS']) && !$_REQUEST['GRAPHS']) && CACHEPREFIX=='opcache_') { graphs_display(); if ( !empty($_REQUEST['GRAPHS']) ) { exit; } }
133 
134 ob_start(); phpinfo(8); $phpinfo = ob_get_contents(); ob_end_clean(); // some info is only available via phpinfo? sadly buffering capture has to be used
135 if ( !preg_match( '/module\_Zend (Optimizer+|OPcache).+?(<table[^>]*>.+?</table>).+?(<table[^>]*>.+?</table>)/s', $phpinfo, $opcache) ) { } // todo
136 
137 if ( function_exists(CACHEPREFIX.'get_configuration') ) { echo '<h2>general</h2>'; $configuration=call_user_func(CACHEPREFIX.'get_configuration'); }
138 
139 $host=function_exists('gethostname')?@gethostname():@php_uname('n'); if (empty($host)) { $host=empty($_SERVER['SERVER_NAME'])?$_SERVER['HOST_NAME']:$_SERVER['SERVER_NAME']; }
140 $version=array('Host'=>$host);
141 $version['PHP Version']='PHP '.(defined('PHP_VERSION')?PHP_VERSION:'???').' '.(defined('PHP_SAPI')?PHP_SAPI:'').' '.(defined('PHP_OS')?' '.PHP_OS:'');
142 $version['Opcache Version']=empty($configuration['version']['version'])?'???':$configuration['version'][CACHEPREFIX.'product_name'].' '.$configuration['version']['version'];
143 print_table($version);
144 
145 if ( !empty($opcache[2]) ) { echo preg_replace('/<tr><td class="e">[^>]+</td><td class="v">[0-9\,. ]+</td></tr>/','',$opcache[2]); }
146 
147 if ( function_exists(CACHEPREFIX.'get_status') && $status=call_user_func(CACHEPREFIX.'get_status') ) {
148 $uptime=array();
149 if ( !empty($status[CACHEPREFIX.'statistics']['start_time']) ) {
150 $uptime['uptime']=time_since($time,$status[CACHEPREFIX.'statistics']['start_time'],1,'');
151 }
152 if ( !empty($status[CACHEPREFIX.'statistics']['last_restart_time']) ) {
153 $uptime['last_restart']=time_since($time,$status[CACHEPREFIX.'statistics']['last_restart_time']);
154 }
155 if (!empty($uptime)) {print_table($uptime);}
156 if ( !empty($status['cache_full']) ) { $status['memory_usage']['cache_full']=$status['cache_full']; }
157 echo '<h2 id="memory">memory</h2>';
158 print_table($status['memory_usage']);
159 unset($status[CACHEPREFIX.'statistics']['start_time'],$status[CACHEPREFIX.'statistics']['last_restart_time']);
160 echo '<h2 id="statistics">statistics</h2>';
161 print_table($status[CACHEPREFIX.'statistics']);
162 }
163 
164 if ( empty($_GET['ALL']) ) { meta_display(); exit; }
165 if ( !empty($configuration['blacklist']) ) { echo '<h2 id="blacklist">blacklist</h2>'; print_table($configuration['blacklist']); }
166 
167 if ( !empty($opcache[3]) ) { echo '<h2 id="runtime">runtime</h2>'; echo $opcache[3]; }
168 
169 $name='zend opcache'; $functions=get_extension_funcs($name);
170 if (!$functions) { $name='zend optimizer+'; $functions=get_extension_funcs($name); }
171 if ($functions) { echo '<h2 id="functions">functions</h2>'; print_table($functions); } else { $name=''; }
172 
173 $level=trim(CACHEPREFIX,'_').'.optimization_level';
174 if (isset($configuration['directives'][$level])) {
175 echo '<h2 id="optimization">optimization levels</h2>';   
176 $levelset=strrev(base_convert($configuration['directives'][$level], 10, 2));
177 $levels=array(
178 1=>'<a href="http://wikipedia.org/wiki/Common_subexpression_elimination">Constants subexpressions elimination</a> (CSE) true, false, null, etc.<br />Optimize series of ADD_STRING / ADD_CHAR<br />Convert CAST(IS_BOOL,x) into BOOL(x)<br />Convert <a href="http://www.php.net/manual/internals2.opcodes.init-fcall-by-name.php">INIT_FCALL_BY_NAME</a> + <a href="http://www.php.net/manual/internals2.opcodes.do-fcall-by-name.php">DO_FCALL_BY_NAME</a> into <a href="http://www.php.net/manual/internals2.opcodes.do-fcall.php">DO_FCALL</a>',
179 2=>'Convert constant operands to expected types<br />Convert conditional <a href="http://php.net/manual/internals2.opcodes.jmp.php">JMP</a> with constant operands<br />Optimize static <a href="http://php.net/manual/internals2.opcodes.brk.php">BRK</a> and <a href="<a href="http://php.net/manual/internals2.opcodes.cont.php">CONT</a>',
180 3=>'Convert $a = $a + expr into $a += expr<br />Convert $a++ into ++$a<br />Optimize series of <a href="http://php.net/manual/internals2.opcodes.jmp.php">JMP</a>',
181 4=>'PRINT and ECHO optimization (<a href="https://github.com/zend-dev/ZendOptimizerPlus/issues/73">defunct</a>)',
182 5=>'Block Optimization - most expensive pass<br />Performs many different optimization patterns based on <a href="http://wikipedia.org/wiki/Control_flow_graph">control flow graph</a> (CFG)',
183 9=>'Optimize <a href="http://wikipedia.org/wiki/Register_allocation">register allocation</a> (allows re-usage of temporary variables)',
184 10=>'Remove NOPs'
185 );
186 echo '<table width="600" border="0" cellpadding="3"><tbody><tr class="h"><th>Pass</th><th>Description</th></tr>';
187 foreach ($levels as $pass=>$description) {
188 $disabled=substr($levelset,$pass-1,1)!=='1' || $pass==4 ? ' white':'';
189 echo '<tr><td class="v center middle'.$disabled.'">'.$pass.'</td><td class="v'.$disabled.'">'.$description.'</td></tr>';
190 }
191 echo '</table>';
192 }
193 
194 if ( isset($_GET['DUMP']) ) {
195 if ($name) { echo '<h2 id="ini">ini</h2>'; print_table(ini_get_all($name,true)); }
196 foreach ($configuration as $key=>$value) { echo '<h2>',$key,'</h2>'; print_table($configuration[$key]); }
197 exit;
198 }
199 
200 meta_display();
201 
202 echo '</div></body></html>';
203 
204 exit;
205 
206 function time_since($time,$original,$extended=0,$text='ago') {   
207 $time = $time - $original;
208 $day = $extended? floor($time/86400) : round($time/86400,0);
209 $amount=0; $unit='';
210 if ( $time < 86400) {
211 if ( $time < 60)    { $amount=$time; $unit='second'; }
212 elseif ( $time < 3600) { $amount=floor($time/60); $unit='minute'; }
213 else    { $amount=floor($time/3600); $unit='hour'; }   
214 }
215 elseif ( $day < 14) { $amount=$day; $unit='day'; }
216 elseif ( $day < 56) { $amount=floor($day/7); $unit='week'; }
217 elseif ( $day < 672) { $amount=floor($day/30); $unit='month'; }
218 else {    $amount=intval(2*($day/365))/2; $unit='year'; }
219 if ( $amount!=1) {$unit.='s';}   
220 if ($extended && $time>60) { $text=' and '.time_since($time,$time<86400?($time<3600?$amount*60:$amount*3600):$day*86400,0,'').$text; }
221 return $amount.' '.$unit.' '.$text;
222 }
223 
224 function print_table($array,$headers=false) {
225 if ( empty($array) || !is_array($array) ) {return;}
226 echo '<table border="0" cellpadding="3" width="600">';
227 if (!empty($headers)) {
228 if (!is_array($headers)) {$headers=array_keys(reset($array));}
229 echo '<tr class="h">';
230 foreach ($headers as $value) { echo '<th>',$value,'</th>'; }
231 echo '</tr>';
232 }
233 foreach ($array as $key=>$value) {
234 echo '<tr>';
235 if ( !is_numeric($key) ) {
236 $key=ucwords(str_replace('_',' ',$key));
237 echo '<td class="e">',$key,'</td>';
238 if ( is_numeric($value) ) {
239 if ( $value>1048576) { $value=round($value/1048576,1).'M'; }
240 elseif ( is_float($value) ) { $value=round($value,1); }
241 }
242 }
243 if ( is_array($value) ) {
244 foreach ($value as $column) {
245 echo '<td class="v">',$column,'</td>';
246 }
247 echo '</tr>';
248 }
249 else { echo '<td class="v">',$value,'</td></tr>'; }
250 }
251 echo '</table>';
252 }
253 
254 function files_display() {   
255 $status=call_user_func(CACHEPREFIX.'get_status');
256 if ( empty($status['scripts']) ) {return;}
257 if ( isset($_GET['DUMP']) ) { print_table($status['scripts']); exit;}
258 $time=time(); $sort=0;
259 $nogroup=preg_replace('/&?GROUP=[-0-9]+/','',$_SERVER['REQUEST_URI']);
260 $nosort=preg_replace('/&?SORT=[-0-9]+/','',$_SERVER['REQUEST_URI']);
261 $group=empty($_GET['GROUP'])?0:intval($_GET['GROUP']); if ( $group<0 || $group>9) { $group=1;}
262 $groupset=array_fill(0,9,''); $groupset[$group]=' class="b" ';
263 echo '<div class="meta">
264 <a ',$groupset[0],'href="',$nogroup,'">ungroup</a> |
265 <a ',$groupset[1],'href="',$nogroup,'&GROUP=1">1</a> |
266 <a ',$groupset[2],'href="',$nogroup,'&GROUP=2">2</a> |
267 <a ',$groupset[3],'href="',$nogroup,'&GROUP=3">3</a> |
268 <a ',$groupset[4],'href="',$nogroup,'&GROUP=4">4</a> |
269 <a ',$groupset[5],'href="',$nogroup,'&GROUP=5">5</a>
270 </div>';
271 if ( !$group ) { $files =& $status['scripts']; }
272 else {   
273 $files=array();
274 foreach ($status['scripts'] as $data) {
275 if ( preg_match('@^[/]([^/]+[/]){'.$group.'}@',$data['full_path'],$path) ) {
276 if ( empty($files[$path[0]])) { $files[$path[0]]=array('full_path'=>'','files'=>0,'hits'=>0,'memory_consumption'=>0,'last_used_timestamp'=>'','timestamp'=>''); }
277 $files[$path[0]]['full_path']=$path[0];
278 $files[$path[0]]['files']++;
279 $files[$path[0]]['memory_consumption']+=$data['memory_consumption'];   
280 $files[$path[0]]['hits']+=$data['hits'];
281 if ( $data['last_used_timestamp']>$files[$path[0]]['last_used_timestamp']) {$files[$path[0]]['last_used_timestamp']=$data['last_used_timestamp'];}
282 if ( $data['timestamp']>$files[$path[0]]['timestamp']) {$files[$path[0]]['timestamp']=$data['timestamp'];}   
283 }   
284 }
285 }
286 if ( !empty($_GET['SORT']) ) {
287 $keys=array(
288 'full_path'=>SORT_STRING,
289 'files'=>SORT_NUMERIC,
290 'memory_consumption'=>SORT_NUMERIC,
291 'hits'=>SORT_NUMERIC,
292 'last_used_timestamp'=>SORT_NUMERIC,
293 'timestamp'=>SORT_NUMERIC
294 );
295 $titles=array('','path',$group?'files':'','size','hits','last used','created');
296 $offsets=array_keys($keys);
297 $key=intval($_GET['SORT']);
298 $direction=$key>0?1:-1;
299 $key=abs($key)-1;
300 $key=isset($offsets[$key])&&!($key==1&&empty($group))?$offsets[$key]:reset($offsets);
301 $sort=array_search($key,$offsets)+1;
302 $sortflip=range(0,7); $sortflip[$sort]=-$direction*$sort;
303 if ( $keys[$key]==SORT_STRING) {$direction=-$direction; }
304 $arrow=array_fill(0,7,''); $arrow[$sort]=$direction>0?' &#x25BC;':' &#x25B2;';
305 $direction=$direction>0?SORT_DESC:SORT_ASC;
306 $column=array(); foreach ($files as $data) { $column[]=$data[$key]; }
307 array_multisort($column, $keys[$key], $direction, $files);
308 }
309 
310 echo '<table border="0" cellpadding="3" width="960" id="files">
311 <tr class="h">';
312 foreach ($titles as $column=>$title) {
313 if ($title) echo '<th><a href="',$nosort,'&SORT=',$sortflip[$column],'">',$title,$arrow[$column],'</a></th>';
314 }
315 echo ' </tr>';
316 foreach ($files as $data) {
317 echo '<tr>
318 <td class="v" nowrap><a title="recheck" href="?RECHECK=',rawurlencode($data['full_path']),'">x</a>',$data['full_path'],'</td>',
319 ($group?'<td class="vr">'.number_format($data['files']).'</td>':''),
320 '<td class="vr">',number_format(round($data['memory_consumption']/1024)),'K</td>',
321 '<td class="vr">',number_format($data['hits']),'</td>',
322 '<td class="vr">',time_since($time,$data['last_used_timestamp']),'</td>',
323 '<td class="vr">',empty($data['timestamp'])?'':time_since($time,$data['timestamp']),'</td>
324 </tr>';
325 }
326 echo '</table>';
327 }
328 
329 function graphs_display() {
330 $graphs=array();
331 $colors=array('green','brown','red');
332 $primes=array(223, 463, 983, 1979, 3907, 7963, 16229, 32531, 65407, 130987);
333 $configuration=call_user_func(CACHEPREFIX.'get_configuration');
334 $status=call_user_func(CACHEPREFIX.'get_status');
335 
336 $graphs['memory']['total']=$configuration['directives']['opcache.memory_consumption'];
337 $graphs['memory']['free']=$status['memory_usage']['free_memory'];
338 $graphs['memory']['used']=$status['memory_usage']['used_memory'];
339 $graphs['memory']['wasted']=$status['memory_usage']['wasted_memory'];
340 
341 $graphs['keys']['total']=$status[CACHEPREFIX.'statistics']['max_cached_keys'];   
342 foreach ($primes as $prime) { if ($prime>=$graphs['keys']['total']) { $graphs['keys']['total']=$prime; break;} }
343 $graphs['keys']['free']=$graphs['keys']['total']-$status[CACHEPREFIX.'statistics']['num_cached_keys'];
344 $graphs['keys']['scripts']=$status[CACHEPREFIX.'statistics']['num_cached_scripts'];
345 $graphs['keys']['wasted']=$status[CACHEPREFIX.'statistics']['num_cached_keys']-$status[CACHEPREFIX.'statistics']['num_cached_scripts'];
346 
347 $graphs['hits']['total']=0;
348 $graphs['hits']['hits']=$status[CACHEPREFIX.'statistics']['hits'];
349 $graphs['hits']['misses']=$status[CACHEPREFIX.'statistics']['misses'];
350 $graphs['hits']['blacklist']=$status[CACHEPREFIX.'statistics']['blacklist_misses'];
351 $graphs['hits']['total']=array_sum($graphs['hits']);
352 
353 $graphs['restarts']['total']=0;
354 $graphs['restarts']['manual']=$status[CACHEPREFIX.'statistics']['manual_restarts'];
355 $graphs['restarts']['keys']=$status[CACHEPREFIX.'statistics']['hash_restarts'];
356 $graphs['restarts']['memory']=$status[CACHEPREFIX.'statistics']['oom_restarts'];
357 $graphs['restarts']['total']=array_sum($graphs['restarts']);
358 
359 foreach ( $graphs as $caption=>$graph) {
360 echo '<div class="graph"><div class="h">',$caption,'</div><table border="0" cellpadding="0" cellspacing="0">';   
361 foreach ($graph as $label=>$value) {
362 if ($label=='total') { $key=0; $total=$value; $totaldisplay='<td rowspan="3" class="total"><span>'.($total>999999?round($total/1024/1024).'M':($total>9999?round($total/1024).'K':$total)).'</span><div></div></td>'; continue;}
363 $percent=$total?floor($value*100/$total):''; $percent=!$percent||$percent>99?'':$percent.'%';
364 echo '<tr>',$totaldisplay,'<td class="actual">', ($value>999999?round($value/1024/1024).'M':($value>9999?round($value/1024).'K':$value)),'</td><td class="bar ',$colors[$key],'" height="',$percent,'">',$percent,'</td><td>',$label,'</td></tr>';
365 $key++; $totaldisplay='';
366 }
367 echo '</table></div>',"
";
368 }
369 }
370 
371 function meta_display() {
372 ?>
373 <div class="meta">
374 <a href="http://files.zend.com/help/Zend-Server-6/content/zendoptimizerplus.html">directives guide</a> |
375 <a href="http://files.zend.com/help/Zend-Server-6/content/zend_optimizer+_-_php_api.htm">functions guide</a> |
376 <a href="https://wiki.php.net/rfc/optimizerplus">wiki.php.net</a> |
377 <a href="http://pecl.php.net/package/ZendOpcache">pecl</a> |
378 <a href="https://github.com/zend-dev/ZendOptimizerPlus/">Zend source</a> |
379 <a href="https://gist.github.com/ck-on/4959032/?ocp.php">OCP latest</a>
380 </div>
381 <?php
382 }