Exercises
Tools
General Tools
CSS Maker
Color Tools
String Tools
- String Length Calculator
- MD5 Hash Generator
- Sha256 Hash Generator
- String Reverse
- URL Encoder
- URL Decoder
- Base 64 Encoder
- Base 64 Decoder
- Extra Spaces Remover
- String to Lowercase
- String to Uppercase
- Word Count Calculator
- Empty Lines Remover
- HTML Tags Remover
- Binary to Hex
- Hex to Binary
- Rot13 Transform on a String
- String to Binary
- Duplicate Lines Remover
PHP basics
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1/25 How do you start the PHP scripting block?
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2/25 What does a semicolon indicate?
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3/25 PHP variables need to be declared before adding values to them
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4/25 Which is the correct way to declare a PHP variable?
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5/25 An array is a special variable that is capable of holding more than one value at a time.
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6/25 In PHP, which operator is used for object comparison?
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7/25 What is the purpose of the 'include' statement in PHP?
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8/25 What is the correct way to end a PHP statement?
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9/25 Which global variable in PHP holds information about headers, paths, and script locations?
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10/25 In PHP, what does the 'array_pop()' function do?
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11/25 What does the 'var_dump()' function in PHP do?
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12/25 What is the correct way to include a file in PHP without causing a fatal error if the file is missing?
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13/25 How can you create a multiline comment in PHP?
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14/25 What does the 'final' keyword do when applied to a class method in PHP?
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15/25 Which of the following is NOT a valid visibility keyword in PHP?
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16/25 How do you access a PHP superglobal variable inside a function?
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17/25 What does the '===' operator in PHP do?
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18/25 In PHP, which operator is used for error control?
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19/25 How do you check if a PHP variable is of type object?
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20/25 Which of the following is a correct way to define a case-insensitive constant in PHP?
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21/25 Which function in PHP can be used to create a new directory?
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22/25 What does the 'file_put_contents()' function in PHP do?
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23/25 What is the correct way to declare a PHP namespace?
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24/25 How can you append an element to an existing array in PHP?
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25/25 In PHP, what is a trait?
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