Looping in array, count and add comma

Posted under » PHP on 13 April 2009

For Looping in associative array in JSON

Very often when you write code, you want the same block of code to run a number of times. You can use looping statements in your code to perform this.

The do...while Statement

<¿php 
$i=0;
do
  {
  $i++;
  echo "The number is " . $i . "
";
  }
while ($i<5);
?> 

The for statement is the most advanced of the loops in PHP.

<¿php 
for ($i=1; $i<=5; $i++)
{
  echo "Hello World!
";
}
?> 

The foreach statement is used to loop through arrays.

<¿php
$arr=array("one", "two", "three");

foreach ($arr as $value)
{
  echo "Value: " . $value . "
";
}
?>

Lets say you want to add commas to the array.

<¿php
$arr=array("one", "two", "three");
$i=0;

foreach ($arr as $value)
 {
     $i++;
     if ($i > 1) { $numb .= ", "; }
     $numb .= $value;
 }
echo $numb
?>

You can sort arrays.