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<?php function coalesce($default, &...$args) { return current(array_filter($args)) ?: $default; } $empty1 = []; $empty2 = ''; $value1 = 'notempty'; echo coalesce('default', $empty1, $undefined, $empty2); // 'default' echo coalesce('default', $empty1, $undefined, $value1, $empty2); // 'notempty'
Output for 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
defaultnotempty
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35
Parse error: syntax error, unexpected '.', expecting variable (T_VARIABLE) in /in/XoWXm on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '.', expecting T_VARIABLE in /in/XoWXm on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '.', expecting T_VARIABLE in /in/XoWXm on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_VARIABLE' in /in/XoWXm on line 3
Process exited with code 255.
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