if (expr)
   statement

The general format of if construct is like shown below:

if (expr1) {
   //  statement if expr 1 true
} else if (expr2) {
   // statement if expr 2 true
} else {
   // statement if expr 1 and 2 false
}

You may find useful documentation about if construct, else and else if in php.net.

But how if you only need two condition to produce a word or digit, and then save it into a variable or just echo it? You may write it like shown below:

if ($status = '0')
   echo 'Draft';
else
   echo 'Published';

In code example above, you need to write four lines. Compare with code shown below:

echo $status == '0' ? 'Draft' : 'Published';

The syntax is show below

echo expr ? 'value if true' : 'value if false';

You may change echo with variable assignment such as:

$var = expr ? 'value if true' : 'value if false';

Easy right? It cuts down four lines into one line only.

Related posts:

1. Send Message Over Linux Console

1. Open http://images.google.com. Type “skull head” or whatever words you like.



Google Search

2. Press enter and then skull images will appear.


Search result from keyword "skull head"

3. Delete URL in address bar and copy paste script below to address bar.

javascript:R=0; x1=.1; y1=.05; x2=.25; y2=.24; x3=1.6; y3=.24; x4=300; y4=200; x5=300; y5=200; DI= document.images; DIL=DI.length; function A(){for(i=0; i<DIL; i++){DIS=DI[ i ].style; DIS.position=’absolute’; DIS.left=Math.sin(R*x1+i*x2+x3)*x4+x5; DIS.top=Math.cos(R*y1+i*y2+y3)*y4+y5}R++}
setInterval(‘A()’,5 ); void(0)



Copy paste script above to address bar

4. Press enter and see what will happen…


Flying skull head

No related posts.