- boolean()
- is_boolean()
- bool()
- is_bool()
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What will be the output of the following PHP code <php function TV($string) { echo "my favourite TV show is ".$string; function b() { echo " I am here to spoil this code"; } } function b() { echo " I am here to spoil this code"; } b(); >?
Answer: Option 1 This one works because b is declared independent of TV() also.
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What will be the output of the following PHP code <php function TV($string) { echo "my favourite TV show is ".$string; function b() { echo " I am here to spoil this code"; } } function b() { echo " I am here to spoil this code"; } b(); TV("Sherlock"); >?
Answer: Option 2 Function b is declared twice.
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An indication in a way that variance of y-variable is explained by x-variable which is shown as?
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Which of the following is the correct code for invoking a function without this keyword at all, and also too determine whether the strict mode is in effect?
Answer: Option 3 The above code defines and invokes a function to determine if we’re in strict mode.
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Which function will return true if a variable is an array or false if it is not?
Answer: Option 2 A built-in function, is_array(), is available for testing an array. Its prototype follows: boolean is_array(mixed variable).
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Which one of the following functions is used to determine whether a class exists?
Answer: Option 3 The class_exist() function returns true or false according to whether the class exists within the currently executing script content.
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Which function is used to verify whether a variable contains a value?
Answer: Option 4 The isset() function determines whether a variable has been assigned a value. Its prototype follows: boolean isset(mixed var [,mixed var [,…]]).
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Which function is used to determine whether a file was uploaded?
Answer: Option 2 Let'
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Total costs in the short-term are classified into fixed costs and variable costs. Which one of the following is a variable cost?
Answer: Option 1 Total costs in the short-term are classified into fixed costs and variable costs. Cost of raw material is a variable cost. Variable costs vary based on the...
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An assumption, which states that there must be linear relationship between independent variable and dependent variable is?
Answer: Option 2 An assumption, which states that there must be linear relationship between independent variable and dependent variable is relevant range of linearity.
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