PHP：缓冲区大小问题

Question

我正面临一个问题，我正在尝试使用PHP对象缓冲区打印内容。如果内容超过4MB，则表示超时。

代码：

GMVPort=timeSeries(cumprod(GMVRetFac),charvec = names (GMVRetFac) )

CVARPort=timeSeries(cumprod(CVARRetFac),charvec = names (CVARRetFac))

## Plotting of portfolio values

ylims=range(cbind(GMVPort, CVARPort))

plot (GMVPort,  ylim = ylims ,  xlab = "",ylab = "Portfolio Value (Index)")

lines (CVARPort,  col = "blue")

legend(" topleft ",legend = c ( "Minimum−Variance","Minimum−CVaR" ),col = c("black" , "blue") ,  lty = 1)

## Relative performance

RelOutPerf=((CVARPort−GMVPort)/GMVPort)∗100