Recompile eAccelerator after upgrading php

If you are using eAccelerator, then after upgrading php, don’t forget to recompile it.
Go into the source directory of your eaccelerator and follow the instructions:

make clean # IMPORTANT!!!
phpize
make
make install

Then we should also reload apache:
service apache reload

That’s it.

PHP条件语句用法,常用比较和逻辑运算符号

比较和逻辑运算符

             符    号

        含    义

             类    型

      示    例

= =

等于

比较

$x == $y

!=

不等于

比较

$x != $y

小于

比较

$x < $y

大于

比较

$x > $y

<=

小于或等于

比较

$x <= $y

>=

大于或等于

比较

$x >= $y

!

逻辑

!$x

&&

逻辑

$x && $y

||

逻辑

$x || $y

XOR

异或

逻辑

$x XOR $y

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