PHP Tutorial > PHP Commands > SWITCH
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 $variable]
}
There can be an unlimited number of CASE conditions. In addition, DEFAULT is optional.
Let's view an example. Assuming we have the following piece of code:
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$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";
}
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The output of the above code is:
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Value is outside the range
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This is because none of the CASE conditions was matched, so the code following DEFAULT is executed.
Next: PHP WHILE Loop
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