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<?php ini_set('assert.exception', 1); try { assert(false, "sdf"); } catch (Throwable $t) { var_dump($t); }
based on croZi
Output for 7.0.0 - 7.2.0
object(AssertionError)#1 (7) { ["message":protected]=> string(3) "sdf" ["string":"Error":private]=> string(0) "" ["code":protected]=> int(1) ["file":protected]=> string(9) "/in/gvYB4" ["line":protected]=> int(6) ["trace":"Error":private]=> array(1) { [0]=> array(4) { ["file"]=> string(9) "/in/gvYB4" ["line"]=> int(6) ["function"]=> string(6) "assert" ["args"]=> array(2) { [0]=> bool(false) [1]=> string(3) "sdf" } } } ["previous":"Error":private]=> NULL }
Output for 5.4.8 - 5.6.28
Warning: assert(): sdf failed in /in/gvYB4 on line 6
Output for 5.3.17 - 5.4.7
Warning: assert() expects exactly 1 parameter, 2 given in /in/gvYB4 on line 6