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<?php $var = "laruence"; $var_dup = $var; debug_zval_dump($var_dup); debug_zval_dum($var); unset($var); debug_zval_dump($var_dup);
based on rB4jf
Output for 7.0.0 - 7.1.0, 7.1.7 - 7.3.0alpha1
string(8) "laruence" refcount(1) Fatal error: Uncaught Error: Call to undefined function debug_zval_dum() in /in/8vC1M:5 Stack trace: #0 {main} thrown in /in/8vC1M on line 5
Process exited with code 255.
Output for 7.1.5 - 7.1.6
string(8) "laruence" refcount(4) Fatal error: Uncaught Error: Call to undefined function debug_zval_dum() in /in/8vC1M:5 Stack trace: #0 {main} thrown in /in/8vC1M on line 5
Process exited with code 255.
Output for 5.3.21 - 5.6.28
string(8) "laruence" refcount(3) Fatal error: Call to undefined function debug_zval_dum() in /in/8vC1M on line 5
Process exited with code 255.