Php/docs/rrd.examples-procedural
来自菜鸟教程
Procedural PECL/rrd example
Example #1 Procedural usage of rrd
<?php$rrdFile = dirname(__FILE__) . "/speed.rrd";//create rrd filerrd_create($rrdFile, array( "--start",920804400, "DS:speed:COUNTER:600:U:U", "RRA:AVERAGE:0.5:1:24", "RRA:AVERAGE:0.5:6:10" ));//update rrd filerrd_update($rrdFile, array( "920804700:12345", "920805000:12357" ));//graph outputrrd_graph(dirname(__FILE__) . "/speed.png", array( "--start", "920804400", "--end", "920808000", "--vertical-label", "m/s", "DEF:myspeed=$rrdFile:speed:AVERAGE", "CDEF:realspeed=myspeed,1000,*", "LINE2:realspeed#FF0000" ));?>
