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Use case sharing of continue in php

黄舟
黄舟Original
2017-06-25 09:42:091257browse

continue In the loop structure is used to skip the remaining code in this loop and start executing the next loop when the condition evaluates to true . For example:

 <?php
     $i=0;
     while($i<5)
     {
       if($i==2)
        {
          continue;
        }
       echo "$i<br>";
       $i++;
     }  
?>


When $i is 2, it will jump out of the loop and execute the next loop. The output is:

0
1
3
4

continue accepts an optional numeric parameter to determine how many loops to skip to the end of the loop. The default value is 1, which jumps to the end of the current loop.

 <?php
for($m=0; $m <5; $m++)
{ 
     for($i=0; $i <5; $i++)
     {
     	
     	if($i > 3)
     	{
          continue 2;        
       }
       echo "$i    $m    <br>";
     }
     
     
 }
?>

The result is

0 0 
1 0 
2 0 
3 0 
0 1 
1 1 
2 1 
3 1 
0 2 
1 2 
2 2 
3 2 
0 3 
1 3 
2 3 
3 3 
0 4 
1 4 
2 4 
3 4

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