Example of PHP variable and Example of scope of variable:

Example of PHP variable:

$fruit = “apple”;  //character type variable

$x=10; //integer type variable

There are four scopes of PHP variable.

• Local  – Its scope for the block in which it is declared, it can’t be accessed outside of that block.
• Global – Its scope for the whole code, it can be accessed from any part of the PHP file.
• Static – It contain the value till end of the execution of the file.
• Parameter – Its scope is limited to particular function parameters.

Example of scope of variable:

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$a = 10;  // global variable $b = 20; //  global variable function Sum(){   global $a,$b; // accessing global variables using 'global' keyword   $c = $a + $b;   echo $c; // local variable } function varStatic(){  static $d = 0; // static variable  echo $d;  $d++; } Sum(); echo $b; varStatic();

In varStatic() function, it will initialize $d=0 only when the function called for the first time and it will increment the value of $d every time function called.