$a << $b

Bitshift left

Shift the bits of the first operand to the left by the number of positions specified in the second operand.

Tags
// Binary representation of 5: 00000101
$a = 5; 

// Binary result: 00010100
$a << 2;

null coalescing

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PHP Operators is a reference guide for operators old and new in the PHP programming language. We're SPATIE, a web development agency from Belgium. Besides client work we like to contribute to the open source community and make fun projects like this one.