Laravel blade $ loop index and remaining, laravelremaining

Laravel blade $ loop index and remaining, laravelremaining

Laravel 5.3 blade adds $ loop Variable

 

The document is as follows:

In Laravel 5.3,@foreachCommands provide more powerful functions in each@foreachYou can call a new$loopVariable. This variable isstdClassThe instance contains the metadata information of the current loop. Let's take a look at the attributes it provides:

• Index: A circular index starting from 1. 1 indicates that it is the first entry.
• Remaining: number of entries in the loop. For example, if the current number is the first of the three, 2 is returned;
• Count: Total number of items in a loop
• First: whether it is the first
• Last: whether it is the last one
• Depth: loop level
• Parent: If the loop is located in another @ foreach, the parent loop reference is returned; otherwise, null is returned.

Data = ['A', 'B', 'C', 'D'];

@ Foreach ($ data as $ v)
<P>
{$ Loop-> count} // output 4
{$ Loop-> index} // output 0, 1, 2, 3
</P>
@ Foreach ($ data as $ key => $ value)
<P>
@ If ($ loop-> first)
{$ Loop-> parent-> depth} // 1 returns the parent loop. The parent loop level is 1.
@ Elseif ($ loop-> last) // last
{$ Loop-> depth} // 2 Number of current loop layers 2
@ Else
{$ Loop-> remaining} // 2, 1
@ Endif
</P>
@ Endforeach
@ Endforeach

We found that $ loop-> index, $ loop-> remaining are counted from 0, not from 1.

TEST data = [1 => 'A', 2 => 'B', 3 => 'C ', 4 => 'D'];

The test results are consistent.

Let's take a look at the English documents later.