It’s OK now.
Some php5 modules was again activated.
So i removed all the php5 modules and installed the php7 modules.
My history.log
Citation
Start-Date: 2017-07-29 17:59:56
Commandline: apt-get remove php5-common
Remove: php5-gd:i386 (5.6.30+dfsg-0+deb8u1), php5-apcu:i386 (4.0.7-1), php5-common:i386 (5.6.30+dfsg-0+deb8u1), php5-cli:i386 (5.6.30+dfsg-0+deb8u1), php5-readline:i386 (5.6.30+dfsg-0+deb8u1), php5-json:i386 (1.3.6-1), libapache2-mod-php5:i386 (5.6.30+dfsg-0+deb8u1), php5-mysql:i386 (5.6.30+dfsg-0+deb8u1)
End-Date: 2017-07-29 18:00:13
Start-Date: 2017-07-29 18:01:58
Commandline: apt-get autoremove --purge
Purge: libvpx1:i386 (1.3.0-3), libjson-c2:i386 (0.11-4)
End-Date: 2017-07-29 18:02:02
Start-Date: 2017-07-29 18:14:09
Commandline: apt-get install php7.0-mysql
Install: php7.0-mysql:i386 (7.0.19-1)
End-Date: 2017-07-29 18:14:20
Start-Date: 2017-07-29 18:29:40
Commandline: apt-get install php7.0-gd
Install: php7.0-gd:i386 (7.0.19-1)
End-Date: 2017-07-29 18:29:45
Start-Date: 2017-07-29 18:33:04
Commandline: apt-get install php-apcu
Install: php-apcu-bc:i386 (1.0.3-2, automatic), php-apcu:i386 (5.1.8+4.0.11-1)
End-Date: 2017-07-29 18:33:07
Start-Date: 2017-07-29 18:38:09
Commandline: apt-get install libapache2-mod-php
Install: libapache2-mod-php:i386 (1:7.0+49)
End-Date: 2017-07-29 18:38:10
Start-Date: 2017-07-29 19:28:58
Commandline: apt-get install php7.0-zip
Install: libzip4:i386 (1.1.2-1.1+b1, automatic), php7.0-zip:i386 (7.0.19-1)
End-Date: 2017-07-29 19:29:08
Start-Date: 2017-07-29 19:30:25
Commandline: apt-get install php7.0-mbstring
Install: php7.0-mbstring:i386 (7.0.19-1)
End-Date: 2017-07-29 19:30:30