Raw PHP in Blade (@php) in Laravel - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ component_behavior

intermediate

What is the output of this Blade snippet using @php?

Consider this Blade template snippet:

@php
  $count = 3;
  echo "Count is: $count";
@endphp

What will be rendered on the page?

Laravel

@php
  $count = 3;
  echo "Count is: $count";
@endphp

A Count is: 3

B

@php
  $count = 3;
  echo "Count is: $count";
@endphp

C Count is: $count

D Error: Undefined variable

💡 Hint

Remember that @php allows you to write raw PHP code inside Blade templates.

The @php directive runs the PHP code inside it. The echo outputs the string with the variable value, so the rendered output is 'Count is: 3'.

📝 Syntax

intermediate

Which option correctly uses @php to define and display a variable?

You want to define a variable $name with value 'Alice' and display it inside a Blade template using @php. Which snippet is correct?

A

@php
  echo $name = 'Alice';
@endphp

B

@php
  $name = 'Alice';
  echo $name;
@endphp

C

@php
  $name = 'Alice'
  echo $name;
@endphp

D

@php
  $name = 'Alice';
  echo '$name';
@endphp

💡 Hint

Check for proper PHP syntax and how variables are echoed.

Option B correctly defines $name and echoes it. Option B echoes assignment but is less clear. Option B misses a semicolon causing syntax error. Option B echoes the string '$name' literally, not the variable value.

🔧 Debug

advanced

Why does this Blade template cause an error?

Given this Blade snippet:

@php
  $total = 5
  echo $total;
@endphp

What is the cause of the error?

Laravel

@php
  $total = 5
  echo $total;
@endphp

A Missing semicolon after assigning $total

B echo cannot be used inside @php

C Variable $total is undefined

D Blade does not support @php directive

💡 Hint

Check PHP syntax rules inside @php blocks.

PHP requires semicolons at the end of statements. Missing semicolon after '$total = 5' causes a syntax error.

❓ state_output

advanced

What is the output after this Blade snippet runs?

Analyze this Blade code:

@php
  $x = 10;
  $x += 5;
  echo $x;
@endphp

What will be displayed?

Laravel

@php
  $x = 10;
  $x += 5;
  echo $x;
@endphp

A Error: Undefined variable

B 10

C 5

D 15

💡 Hint

Remember how += operator works in PHP.

The variable $x starts at 10, then 5 is added, so echo outputs 15.

🧠 Conceptual

expert

What is a key benefit of using @php directive in Blade templates?

Why would a developer choose to use the @php directive inside a Blade template instead of writing pure PHP tags ?

A @php automatically escapes all output for security

B @php runs PHP code on the client side for faster rendering

C @php integrates better with Blade syntax and avoids conflicts with Blade's own tags

D @php disables PHP error reporting inside Blade templates

💡 Hint

Think about how Blade templates handle PHP code and syntax conflicts.

The @php directive is designed to work smoothly inside Blade templates without conflicting with Blade's own syntax, unlike raw PHP tags which can cause parsing issues.

Practice

1. What is the main purpose of using @php in a Laravel Blade template?

easy

A. To define routes in Laravel

B. To include CSS styles directly

C. To create database migrations

D. To write raw PHP code inside the Blade template

Solution

1. Step 1: Understand Blade template usage

   Blade templates allow embedding PHP code for dynamic content.

2. Step 2: Identify the role of @php

   The @php directive lets you write plain PHP code inside Blade templates.

3. Final Answer:

   To write raw PHP code inside the Blade template -> Option D

4. Quick Check:

   @php is for raw PHP code [OK]

Hint: Remember @php means raw PHP inside Blade [OK]

Common Mistakes:

• Confusing @php with CSS or HTML directives
• Thinking @php defines routes or migrations
• Using @php to write JavaScript code

2. Which of the following is the correct syntax to write raw PHP code inside a Blade template using @php?

easy

A. @php { echo 'Hello'; }

B.

C. @php echo 'Hello'; @endphp

D. @php echo 'Hello';

Solution

1. Step 1: Recall Blade raw PHP syntax

   Blade uses @php to start and @endphp to end raw PHP blocks.

2. Step 2: Check each option

   @php echo 'Hello'; @endphp correctly uses @php and @endphp to wrap PHP code.

3. Final Answer:

   @php echo 'Hello'; @endphp -> Option C

4. Quick Check:

   Raw PHP block must start with @php and end with @endphp [OK]

Hint: Use @php ... @endphp to wrap PHP code in Blade [OK]

Common Mistakes:

• Omitting the closing @endphp
• Using curly braces instead of @endphp
• Using raw PHP tags inside Blade without @php

3. What will be the output of the following Blade snippet?

@php
  $count = 3;
  for ($i = 1; $i <= $count; $i++) {
    echo "Item $i ";
  }
@endphp

medium

A. Item 1 Item 2 Item 3

B. Item 123

C. Item $i Item $i Item $i

D. Syntax error

Solution

1. Step 1: Analyze the PHP loop inside @php block

   The loop runs from 1 to 3, echoing "Item " plus the current number and a space each time.

2. Step 2: Determine the output string

   It prints "Item 1 ", then "Item 2 ", then "Item 3 ", concatenated as one string.

3. Final Answer:

   Item 1 Item 2 Item 3 -> Option A

4. Quick Check:

   Loop prints each item with number and space [OK]

Hint: Loops inside @php behave like normal PHP loops [OK]

Common Mistakes:

• Thinking echo concatenates without spaces
• Confusing variable interpolation syntax
• Expecting Blade syntax inside @php block

4. Identify the error in this Blade template code:

@php
  $name = 'Alice'
  echo "Hello, $name!";
@endphp

medium

A. Missing semicolon after variable assignment

B. Incorrect use of double quotes

C. Missing @endphp directive

D. Variable name not allowed in Blade

Solution

1. Step 1: Check PHP syntax inside @php block

   PHP requires semicolons after statements; the assignment line lacks one.

2. Step 2: Confirm other syntax correctness

   Double quotes and variable usage are correct; @endphp is present.

3. Final Answer:

   Missing semicolon after variable assignment -> Option A

4. Quick Check:

   Every PHP statement needs a semicolon [OK]

Hint: Check semicolons after each PHP statement [OK]

Common Mistakes:

• Forgetting semicolon after variable assignment
• Assuming Blade handles PHP syntax errors
• Missing closing @endphp tag

5. You want to display a list of users with their ages using raw PHP inside a Blade template. Which code correctly uses @php to loop through $users = [['name' => 'Bob', 'age' => 25], ['name' => 'Sue', 'age' => 30]]; and echo each user's name and age?

hard

A. @php
foreach ($users as $user) {
echo 'Name: $user[name], Age: $user[age]';
}
@endphp

B. @php
foreach ($users as $user) {
echo "Name: {$user['name']}, Age: {$user['age']}";
}
@endphp

C. @php
foreach ($users as $user) {
echo "Name: $user->name, Age: $user->age";
}
@endphp

D. @php
foreach ($users as $user) {
echo "Name: $user[name], Age: $user[age]";
}
@endphp

Solution

1. Step 1: Understand the data structure

   $users is an array of associative arrays, so access uses square brackets with quotes.

2. Step 2: Check string interpolation syntax

   @php foreach ($users as $user) { echo "Name: {$user['name']}, Age: {$user['age']}
   "; } @endphp correctly uses curly braces around array keys inside double quotes for interpolation.

3. Final Answer:

   @php foreach ($users as $user) { echo "Name: {$user['name']}, Age: {$user['age']}<br>"; } @endphp -> Option B

4. Quick Check:

   Use {$array['key']} inside double quotes for correct interpolation [OK]

Hint: Use curly braces for array keys inside double quotes [OK]

Common Mistakes:

• Using single quotes with variables inside (no interpolation)
• Accessing arrays as objects ($user->name) when they are arrays
• Not using curly braces for array keys inside strings