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<?php class LazyValue { public function __construct( private Closure $lazy, ){} public function getValue() { static $value = ($this->lazy)(); return $value; } } $t1 = new LazyValue(function () { echo "slow\n"; return "42\n"; }); echo $t1->getValue(); echo $t1->getValue(); echo $t1->getValue();
Output for 8.3.0 - 8.3.11
slow 42 42 42
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.23
Fatal error: Constant expression contains invalid operations in /in/Dfn5j on line 11
Process exited with code 255.
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Parse error: syntax error, unexpected 'private' (T_PRIVATE), expecting variable (T_VARIABLE) in /in/Dfn5j on line 6
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38
Parse error: syntax error, unexpected 'private' (T_PRIVATE), expecting '&' or variable (T_VARIABLE) in /in/Dfn5j on line 6
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_PRIVATE, expecting '&' or T_VARIABLE in /in/Dfn5j on line 6
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_PRIVATE, expecting '&' or T_VARIABLE in /in/Dfn5j on line 6
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/Dfn5j on line 5
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
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/Dfn5j on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/Dfn5j on line 5
Process exited with code 255.
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