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run code in 200+ php & hhvm versions
Bugs & Features
<?php function modify_in_place_by_ref(&$prices) { $prices[0] = 100; } function modify_location_by_ref(&$prices) { $prices = [40, 50, 60]; } $prices = [1, 2, 3]; modify_in_place_by_ref($prices); if ($prices[0] == 100) { echo "Pass-by-reference!\n"; // Yep } else { echo "Pass-by-value!\n"; } $prices = [1, 2, 3]; modify_location($prices); if ($prices[0] == 40) { echo "Pass-by-reference!\n"; // Yep } else { echo "Pass-by-value!\n"; }
Output for 7.0.0 - 7.2.0
Pass-by-reference! Fatal error: Uncaught Error: Call to undefined function modify_location() in /in/8tDef:19 Stack trace: #0 {main} thrown in /in/8tDef on line 19
Process exited with code 255.
Output for 5.4.8 - 5.6.28
Pass-by-reference! Fatal error: Call to undefined function modify_location() in /in/8tDef on line 19
Process exited with code 255.
Output for 5.3.18 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/8tDef on line 7
Process exited with code 255.