Dynamic variable usage examples in PHP _php tips

The examples in this article describe the dynamic variable usage in PHP. Share to everyone for your reference. The specific analysis is as follows:

Fixed variable defined:

$my _pic_1= $row ["pic_1"];
$my _pic_2= $row ["pic_2"];
$my _pic_3= $row ["Pic_3"];
$my _pic_4= $row ["Pic_4"];
$my _pic_5= $row ["Pic_5"];
$my _pic_6= $row ["Pic_6"];
$my _pic_7= $row ["pic_7"];
$my _pic_8= $row ["Pic_8"];

Here we use the Loop statement to lose all the values of each variable:

<?php for
($i =1 $i <=8; $i + +)
{ 
 echo "$my _pic_". $i;
> 

This output

<?php
echo "$my _pic_". $i
>

It's definitely not going to work.

Query PHP dynamic variable usage and change to

<?php
for ($i =1 $i <=8; $i + +) {
  $my _pic_var= "$my _pic". $i;//define variable name  
  echo $ $my _pic_var;//Get variable name $my_ The value of Pic_var $ $my _pic_var; 
  The principle of PHP is this $my _pic_var= "$my _pic_1" defines the value
  of the variable//$ $my _pic_var equal to the value of the read $my_pic_1;  
}
? >

I hope this article will help you with your PHP program design.