osx下php连接不上mysql并报错

报错信息大致如下：
Could not connect:No such file or directory

If you have /tmp/mysql.sock but no /var/mysql/mysql.sock then...

cd /var
sudo mkdir mysql
sudo chmod 755 mysql
cd mysql
ln -s /tmp/mysql.sock mysql.sock

If you have /var/mysql/mysql.sock but no /tmp/mysql.sock then

cd /tmp
ln -s /var/mysql/mysql.sock mysql.sock