Answer
PHP automatically converts data types during comparisons. This may cause unexpected results unless strict (===) comparison is used.
Quick Answer
Type juggling is PHP automatically converting types during comparisons. Using == (loose comparison), "1" equals 1, and empty string equals false. This can cause bugs. Always use === (strict comparison) which checks both value and type. PHP 8 fixed many loose comparison inconsistencies. Explicit type casting or strict_types declaration helps avoid juggling issues.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ