SWITCH is used in PHP to replace nested IF..ELSE loops, and is similar to the CASE command in other computer languages. The basic syntax of SWITCH is as follows:
SWITCH ($variable) {
CASE 'value 1':
[code to execute when $variable = 'value 1']
break;
CASE 'value 2':
[code to execute when $variable = 'value 2']
break;
CASE 'value 3':
...
DEFAULT:
[code to execute when none of the CASE values matches $variable]
}
There can be an unlimited number of CASE conditions. In addition, DEFAULT is optional.
Let's view an example. Assuming we have the following piece of code:
| $sample = 10; SWITCH ($sample) { CASE 30: print "Value is 30"; break; CASE 25: print "Value is 25"; break; CASE 20: print "Value is 20"; break; DEFAULT: print "Value is outside the range"; } |
| Value is outside the range |
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