PHP break
In this chapter you will learn:
- What is a break statement
- Syntax for break statement
- Example - exit a for loop with break statement
- Example - Exit only one level of loop
- Example - exit more than one level with break statement
Description
When used inside loops, break causes PHP to exit the loop and carry on immediately after it.
Syntax
break;
or
break level;Example
exit a for loop with break statement
<?php//j a v a 2s . c o m
for ($i = 1; $i < 10; $i = $i + 1) {
if ($i == 3) continue;
if ($i == 7) break;
print "Number $i\n";
}
?>
The code above generates the following result.
Example 2
break only exits the containing loop.
<?PHP// ja v a 2 s .com
for ($i = 1; $i < 3; $i = $i + 1) {
for ($j = 1; $j < 3; $j = $j + 1) {
for ($k = 1; $k < 3; $k = $k + 1) {
print "I: $i, J: $j, K: $k\n";
break;
}
}
}
?>
The code above generates the following result.
Example 3
You can exercise even more control by specifying a number after break, such as break 2, to break out of two loops or switch/case statements. For example:
<?PHP/*from j a v a 2 s .c om*/
for ($i = 1; $i < 3; $i = $i + 1) {
for ($j = 1; $j < 3; $j = $j + 1) {
for ($k = 1; $k < 3; $k = $k + 1) {
print "I: $i, J: $j, K: $k\n";
break 2;
}
}
}
?>
The code above generates the following result.
The break command applies to both loops and switch/case statements. For example:
<?PHP/*j av a 2 s . co m*/
for ($i = 1; $i < 3; $i = $i + 1) {
for ($j = 1; $j < 3; $j = $j + 1) {
for ($k = 1; $k < 3; $k = $k + 1) {
switch($k) {
case 1:
print "I: $i, J: $j, K: $k\n";
break 2;
case 2:
print "I: $i, J: $j, K: $k\n";
break 3;
}
}
}
}
?>
The code above generates the following result.
Next chapter...
What you will learn in the next chapter: