function getTime(){
		$a = explode (' ',microtime());
		return(double) $a[0] + $a[1];
	} 

function excTime($Start){
		$End = getTime();
		echo "<div style='font-size:11px;color:#6599DD;margin:5px 0;'>this page need ".number_format(($End - $Start),4)." secs too load</div>";
	}

$Start = getTime();

Pada akhir script tulis script berikut

excTime($Start);

1. Download file jdk kemudian misalnya kita taruh di /usr/local

2. Masuk ke direktori /usr/local dan extract file jdk anda

# cd /usr/local
# tar xvzf jdk1.5.0.tgz

3. Tambahkan path java ke bash linux menggunakan editor vi

# cd
# vi .bash_profile

4. Ubah .bash_profile anda menjadi berikut ini

# .bash_profile

# Get the aliases and functions
if [ -f ~/.bashrc ]; then
        . ~/.bashrc
fi

# User specific environment and startup programs

PATH=$PATH:$HOME/bin

export PATH
unset USERNAME
export JAVA_HOME=/usr/local/jdk1.5.0
export PATH=$PATH:$JAVA_HOME/bin

~
~
~
~
".bash_profile" 16L, 262C

penambahan dimualai dari export JAVA_HOME sampai $JAVA_HOME/bin

5. Simpan kalau sudah anda edit, kemudian ketik kode berikut agar .bash_profile anda reload

# . .bash_profile

6. Kalau sudah, silahkan anda cek apakah java sudah terinstall di linux anda

# javac

output nya:

Usage: javac  
where possible options include:
  -g                         Generate all debugging info
  -g:none                    Generate no debugging info
  -g:{lines,vars,source}     Generate only some debugging info
  -nowarn                    Generate no warnings
  -verbose                   Output messages about what the compiler is doing
  -deprecation               Output source locations where deprecated APIs are used
  -classpath           Specify where to find user class files
  -cp                  Specify where to find user class files
  -sourcepath          Specify where to find input source files
  -bootclasspath       Override location of bootstrap class files
  -extdirs             Override location of installed extensions
  -endorseddirs        Override location of endorsed standards path
  -d              Specify where to place generated class files
  -encoding        Specify character encoding used by source files
  -source           Provide source compatibility with specified release
  -target           Generate class files for specific VM version
  -version                   Version information
  -help                      Print a synopsis of standard options
  -X                         Print a synopsis of nonstandard options
  -J                   Pass  directly to the runtime system

Misalkan kita memiliki sebuah array kemudian kita ingin menghapus array yang memiliki value ‘candra’

$array = array('anggi','budi','candra');

foreach ($array as $key => $value) {
      if (is_null($value) || $value=="candra") {
        unset($files[$key]);
      }
    }

maka array yang tersisa adalah

$array = array('anggi','budi');

bisa dicek menggunakan perintah

print_r($array);

# chkconfig httpd on

jika sudah, cek apakah sudah autostart

# chkconfig –-list |grep httpd

output:

httpd 0:off 1:off 2:on 3:on 4:on 5:on 6:off

# service httpd start

Menghentikan service

# service httpd stop

Restart service

# service httpd restart
atau:
# service httpd reload

Melihat status service is running

# service httpd status