You mean these messages?
Quote:
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Aug 19 17:57:11 d64 suhosin[15387]: ALERT - script tried to increase memory_limit to 2147483648 bytes which is above the allowed value (attacker '87.227.67.23', file '/var/www/fotoforalla.se/web/index.php')
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That seems to be an attacker and has nothing to do with your cron jobs or PHP version.