You want to check if the word 'cat' exists anywhere in the string $sentence. Which code snippet correctly does this?

hard📝 Application Q8 of 15

PHP - String Functions

You want to check if the word 'cat' exists anywhere in the string $sentence. Which code snippet correctly does this?

Aif (strpos($sentence, 'cat') !== false) { echo 'Found'; }

Bif (strstr($sentence, 'cat') === true) { echo 'Found'; }

Cif (strpos('cat', $sentence)) { echo 'Found'; }

Dif (strstr($sentence, 'cat') === false) { echo 'Found'; }

Step-by-Step Solution

Solution:

Step 1: Use strpos with strict comparison
To check existence, use strpos and compare strictly to false to handle position 0 correctly.
Step 2: Evaluate options
if (strpos($sentence, 'cat') !== false) { echo 'Found'; } uses correct syntax. if (strstr($sentence, 'cat') === true) { echo 'Found'; } compares substring to boolean incorrectly. if (strpos('cat', $sentence)) { echo 'Found'; } reverses parameters. if (strstr($sentence, 'cat') === false) { echo 'Found'; } checks for false incorrectly.
Final Answer:
if (strpos($sentence, 'cat') !== false) { echo 'Found'; } -> Option A
Quick Check:
Use strpos !== false to check substring presence [OK]

Quick Trick: Use !== false with strpos to detect substring [OK]

Common Mistakes:

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