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<h2 class="title">OOP PECL/rrd example</h2>
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<div class="example" id="example-4498">
<p><strong>Example #1 OO usage of rrd</strong></p>
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<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />$rrdFile </span><span style="color: #007700">= </span><span style="color: #0000BB">dirname</span><span style="color: #007700">(</span><span style="color: #0000BB">__FILE__</span><span style="color: #007700">) . </span><span style="color: #DD0000">"/speed.rrd"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$outputPngFile </span><span style="color: #007700">= </span><span style="color: #0000BB">dirname</span><span style="color: #007700">(</span><span style="color: #0000BB">__FILE__</span><span style="color: #007700">) . </span><span style="color: #DD0000">"/speed.png"</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$creator </span><span style="color: #007700">= new </span><span style="color: #0000BB">RRDCreator</span><span style="color: #007700">(</span><span style="color: #0000BB">$rrdFile</span><span style="color: #007700">, </span><span style="color: #DD0000">"now -10d"</span><span style="color: #007700">, </span><span style="color: #0000BB">500</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$creator</span><span style="color: #007700">-></span><span style="color: #0000BB">addDataSource</span><span style="color: #007700">(</span><span style="color: #DD0000">"speed:COUNTER:600:U:U"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$creator</span><span style="color: #007700">-></span><span style="color: #0000BB">addArchive</span><span style="color: #007700">(</span><span style="color: #DD0000">"AVERAGE:0.5:1:24"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$creator</span><span style="color: #007700">-></span><span style="color: #0000BB">addArchive</span><span style="color: #007700">(</span><span style="color: #DD0000">"AVERAGE:0.5:6:10"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$creator</span><span style="color: #007700">-></span><span style="color: #0000BB">save</span><span style="color: #007700">();<br /><br /></span><span style="color: #0000BB">$updater </span><span style="color: #007700">= new </span><span style="color: #0000BB">RRDUpdater</span><span style="color: #007700">(</span><span style="color: #0000BB">$rrdFile</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$updater</span><span style="color: #007700">-></span><span style="color: #0000BB">update</span><span style="color: #007700">(array(</span><span style="color: #DD0000">"speed" </span><span style="color: #007700">=> </span><span style="color: #DD0000">"12345"</span><span style="color: #007700">), </span><span style="color: #DD0000">"920804700"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$updater</span><span style="color: #007700">-></span><span style="color: #0000BB">update</span><span style="color: #007700">(array(</span><span style="color: #DD0000">"speed" </span><span style="color: #007700">=> </span><span style="color: #DD0000">"12357"</span><span style="color: #007700">), </span><span style="color: #DD0000">"920805000"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$graphObj </span><span style="color: #007700">= new </span><span style="color: #0000BB">RRDGraph</span><span style="color: #007700">(</span><span style="color: #0000BB">$outputPngFile</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$graphObj</span><span style="color: #007700">-></span><span style="color: #0000BB">setOptions</span><span style="color: #007700">(<br /> array(<br /> </span><span style="color: #DD0000">"--start" </span><span style="color: #007700">=> </span><span style="color: #DD0000">"920804400"</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">"--end" </span><span style="color: #007700">=> </span><span style="color: #0000BB">920808000</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">"--vertical-label" </span><span style="color: #007700">=> </span><span style="color: #DD0000">"m/s"</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">"DEF:myspeed=</span><span style="color: #0000BB">$rrdFile</span><span style="color: #DD0000">:speed:AVERAGE"</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">"CDEF:realspeed=myspeed,1000,*"</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">"LINE2:realspeed#FF0000"<br /> </span><span style="color: #007700">)<br />);<br /></span><span style="color: #0000BB">$graphObj</span><span style="color: #007700">-></span><span style="color: #0000BB">save</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">?></span>
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