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<?php
function self_concat($str,$n){
 $result=null;
 while($n--){
   $result.=$str;
 }
 return $result;
}
function get_microtime(){
 list($usec, $sec) = explode(' ', microtime());
 return ((float)$usec + (float)$sec);
}
$start=get_microtime();
echo self_concat("phpinfo()",200000);
echo get_microtime()-$start;
?>
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# tar xzvf php-5.2.5.tar.gz
# cd php-5.2.5
./configure --prefix=/home/redadmin/php --with-apxs2=/home/redadmin/apache/bin/apxs --with-mysql=/home/redadmin/mysql --enable-mbstring=all --enable-track-vars
# make && make install
# cp php.ini-dist /home/redadmin/php/lib/php.ini
# c ......

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<?php
$n = array('13','14','55','10','54','2','79','106','89','90','22','60','111','77777','-110','-10','123');
function partition($n,$left,$right)
{
global $n;
$pivot = $n[$left];
$lo=$left;
$hi=$right+1;
while($lo+1!=$hi) {
if($n[$lo+1]<$pivot)
$lo++;
else if($n[$hi-1] ......

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show databases;//È»ºó¿ÉÒÔuse database_name;
show tables;
¸ü¸Ä±íÃû:
alter table table_name rename new_t;
Ìí¼ÓÁÐ :
alter table table_name add column c_n column attributes;
ɾ³ýÁÐ:
alter table table_name ......

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LoadModule php5_module "D:/PHP/php5apache2-2.dll"
×¢ÒâÕâÀïÒ»¿ªÊ¼ÎÒÌí¼ÓµÄÊÇD:/PHP/php5apache2.dll ......
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