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Procedural PECL/rrd example

Example #1 Procedural usage of rrd

<?php
$rrdFile 
dirname(__FILE__) . "/speed.rrd";

//create rrd file
rrd_create($rrdFile,
 array(
  
"--start",920804400,
  
"DS:speed:COUNTER:600:U:U",
  
"RRA:AVERAGE:0.5:1:24",
  
"RRA:AVERAGE:0.5:6:10"
  
)
);

//update rrd file
rrd_update($rrdFile,
 array(
  
"920804700:12345",
  
"920805000:12357"
  
)
);

//graph output
rrd_graph(dirname(__FILE__) . "/speed.png",
 array(
  
"--start""920804400",
  
"--end""920808000",
  
"--vertical-label""m/s",
  
"DEF:myspeed=$rrdFile:speed:AVERAGE",
  
"CDEF:realspeed=myspeed,1000,*",
  
"LINE2:realspeed#FF0000"
 
)
);
?>

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