<?php $null = null; // Fatal error: var_export($null->someMethod() ?? null); //echo "\n---\n"; // Fatal error: var_export($null->someMethod()->city ?? null); //echo "\n---\n"; // Fatal error: var_export($null->someMethod()?->city ?? null); //echo "\n---\n"; var_export($null?->someMethod() ?? "null coalesced"); // ^-- null-safe operator required before method call echo "\n---\n"; var_export($null?->property?->someMethod() ?? "null coalesced"); // ^----------^-- null-safe operators required before method call echo "\n---\n"; var_export($null->property->anotherProperty ?? "null coalesced"); // ^---------^-- NO METHODS CALLED, SO NO NULL-SAFE OPERATORS REQUIRED echo "\n---\n"; var_export($null?->property?->someMethod()->anotherProperty ?? "null coalesced"); // ^ ^ ^-- NO NULL-SAFE OPERATORS REQUIRED IF NO SUBSEQUENT METHODS CALLED // |----------|-- nulls-safe operators required before method call
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