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INT(x)与INT(x+1)MySQL相比,声明一个字段有什么影响?如果我尝试进入12345某个INT(4)领域会发生什么?当我查询它时会发生什么?
INT(x)
INT(x+1)
12345
INT(4)
我在通过 ssh2_exec 通过 php 传递以下命令时遇到问题,命令是
./prog cat <<EOF a a a b b c d d EOF
问题是第一行'cat <<EOF',php 将“EOF”作为一个特殊的词,我希望
'cat <<EOF'