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Which of the following are valid PHP variables?
1. @$foo
2. &$variable
3. ${0x0}
4. $variable
5. $0x0
Solution: 1,2,3,4
1. @ is used to suppress the error and is completely valid to use in front of a variable.
2. & is a reference variable
3. {} ie the Curly braces are used inside the double quotes in order to avoid variable names conflict.
4. We all know, its valid
5. Variable name can not begin with a number.
Which of the following are valid PHP variables?
1. @$foo
2. &$variable
3. ${0x0}
4. $variable
5. $0x0
Solution: 1,2,3,4
1. @ is used to suppress the error and is completely valid to use in front of a variable.
2. & is a reference variable
3. {} ie the Curly braces are used inside the double quotes in order to avoid variable names conflict.
4. We all know, its valid
5. Variable name can not begin with a number.
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