PHP Online Test
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The PHP online test assesses knowledge of programming in the PHP language through a series of live coding questions.
The assessment includes work-sample tasks such as:
- Serializing to/from JSON to handle web requests.
- Using OOP principles in PHP.
- Working with associative arrays and using common built-in functions.
A good PHP developer needs a solid understanding of the PHP programming language and its specifics, OOP principles, and the ability to take advantage of its rich set of built-in functions.
Sample public questions
A gaming company is working on a platformer game. They need a function that will compute the character's final speed, given a map and a starting speed.
The terrain on which the game character moves forward is made from various pieces of land placed together. Implement the function calculateFinalSpeed which takes the initial speed of the character, and an array of degrees of inclination that represent the uneven terrain.
The speed of the character will increase or decrease proportionally to the incline of the land, as shown in the image below:
The magnitude of the angle of inclination will always be < 90°. The speed change occurs only once for each piece of land. The function should immediately return 0 as the final speed if an incline reduces the speed to 0 or below 0, which makes the character lose 1 life.
For example, the below code:
echo calculateFinalSpeed(60, [0, 30, 0, -45, 0]);
should print:
75
Your company is analyzing malware which targets numerical record files.
The malware uses a sliding window over the array of numbers in a file, and tries to match the following pattern:
Tl, -, -, X, -, -, -, Tr
The entire window is moved so that 'X' passes through all the values and is compared to the numbers at the 'Tl' and 'Tr' locations, which are positioned at a constant offset to 'X'.
The malware has the following rules:
- If the value at the 'Tl' or 'Tr' position of the pattern is bigger or equal to the value at the 'X’ position, the malware replaces the value at 'X' with 0.
- If the value at the 'Tl' or 'Tr' offset is out of bounds, then the value at 'X' is only compared to the other existing value.
- The record is processed in two stages: first, all the positions that should be set to 0 are located, using the original values for comparison. Only after all positions have been identified do they get set to 0.
For example, if the values in a record file are the following:
[1, 2, 0, 5, 0, 2, 4, 3, 3, 3]
The expected values after the malware runs are:
[1, 0, 0, 5, 0, 0, 0, 3, 3, 0]
In this example, both '2's, the '4' and the last '3' were replaced by 0.
Implement the simulate function so that the malware behavior is replicated for further study.
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44 more premium PHP questions
Array Search, Read First Line, Last Key, Category Tree, Hobbies, Username, View Count, Log Parser, Kilometer Converter, String Occurrence, Segment, Cookie, Read Write Execute, Fire Dragon, Unique Numbers, Chain Link, Special Actions, Language Teacher, Crop Ratio, Vectors, Date Transform, Numbers To Text, Airport Networks, Company Stock, Shipping, Flower Shop, Array Sum, Shipping Service, PC Parts Seller, Action Stack, Paragraph, Filter, Greeter, Planet Search, Digital Flasks, Calories Burned, Circuit Simulator, Students, Chemical Machine, Popular Book, Construction Game, Flimsy Bridge, Height, Parking Allocation.
Skills and topics tested
- PHP
- Arrays
- Recursion
- Exceptions
- Associative Arrays
- Iteration
- Regex
- Strings
- JSON
- Serialization
- XML
- Inheritance
- Method Overriding
- OOP
- Stream
- Arithmetic
- Session
- Interfaces
- Algorithmic Thinking
- Linked List
- Bug Fixing
- Integer Division
- Language
- 2D Array
- Graphs
- AI Code Review
- Conditional Statements
- Loops
- Null Coalescing Operator
- Pass by Reference
- Callback
- Classes
- Properties
- Stack
- Conditions
- Sorting
For job roles
- PHP Developer
- Web Developer
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What others say
Simple, straight-forward technical testing
TestDome is simple, provides a reasonable (though not extensive) battery of tests to choose from, and doesn't take the candidate an inordinate amount of time. It also simulates working pressure with the time limits.
Jan Opperman, Grindrod Bank
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