在Lampp服务器中从php运行ffmpeg时找不到GLIBCXX_3.4.9

我编写了一个php程序，该程序使用ffmpeg根据图像序列创建视频.

I've written a php program which creates a video from sequence of images using ffmpeg.

<?php
    $res = shell_exec("ffmpeg -framerate 50 -i image/image%d.png -c:v libx264 -r 30 -pix_fmt yuv420p out.mp4 2>&1");
    echo "$res";

运行时，

说GLIBCXX_3.4.15，GLIBCXX_3.4.9，GLIBCXX_3.4.11 未找到.

ffmpeg:/opt/lampp/lib/libstdc++.so.6:版本"GLIBCXX_3.4.15"不是

ffmpeg: /opt/lampp/lib/libstdc++.so.6: version `GLIBCXX_3.4.15' not

找到了(/usr/lib/i386-linux-gnu/libjack.so.0要求)ffmpeg:

found (required by /usr/lib/i386-linux-gnu/libjack.so.0) ffmpeg:

/opt/lampp/lib/libstdc ++.so.6:未找到版本"GLIBCXX_3.4.9"

/opt/lampp/lib/libstdc++.so.6: version `GLIBCXX_3.4.9' not found

(/usr/lib/i386-linux-gnu/libzmq.so.3要求)ffmpeg:

(required by /usr/lib/i386-linux-gnu/libzmq.so.3) ffmpeg:

/opt/lampp/lib/libstdc ++.so.6:未找到版本"GLIBCXX_3.4.11"

/opt/lampp/lib/libstdc++.so.6: version `GLIBCXX_3.4.11' not found

(/usr/lib/i386-linux-gnu/libopencv_core.so.2.4要求)ffmpeg:

(required by /usr/lib/i386-linux-gnu/libopencv_core.so.2.4) ffmpeg:

/opt/lampp/lib/libstdc ++.so.6:未找到版本"GLIBCXX_3.4.9"

/opt/lampp/lib/libstdc++.so.6: version `GLIBCXX_3.4.9' not found

(/usr/lib/i386-linux-gnu/libopencv_core.so.2.4所需)

(required by /usr/lib/i386-linux-gnu/libopencv_core.so.2.4)

但是从终端，ffmpeg -framerate 50 -i image/image%d.png -c:v libx264 -r 30 -pix_fmt yuv420p out.mp4命令可以正常工作. 为什么php无法在终端机上正常运行而找不到库?而我该怎么做才能解决php中的问题呢?预先感谢.

But from the terminal, ffmpeg -framerate 50 -i image/image%d.png -c:v libx264 -r 30 -pix_fmt yuv420p out.mp4 command works fine. Why php can't find the libraries while from the terminal it works fine? and what should I do to fix the problem in php? Thanks in advance.