- assert: documentation ( source)
<?php
$x="c̨͔̪͈͓̠͖̬ͦͧH̹̣͚̤̻͔͈̓ͭJ͖̤̠̤̃̉ͮ͊́̀͘͜͡p͚̙̩̪̎̒b̖̫͎͚͓̳̠͆ͦͭͦ̒̕͟͠n̶̡̡̰̙̍͐Q̙̻̞̣̼̳̙͋̆̚g̡̙͚ͪͧ̀͡M̸͍̠̖̹͚̘̟͕̉̒Ṣ̨̢̱̤͙͇͆ͯͤs̎͑ͪͥ̔̕͏͈͍̰̯̣̜̻͙̞x͕͖͌̓̂̏ͭ̓I̧̹͇̭̜̻̗͔̦̔̌̐ͧͨͧ̈́̆͘͡C̸̶͎̳̩̥͇̳͙͇̖̾̐̋̓͜o̴̻̺̫̗̜͑͂̎ͩͣ͛̚͜ͅx͕̜̫͚̣͖̞͈̆ͭ̈́̄̉̉̒L͖̟͂̈́́̆ͯ̂͡z̤̠͓̒ͧȨ͚͉̗̇ͬ̅ͦ̆̍̔̓7̓̑̑ͨ͗̈͂̈́͏̬̰̦̮̫̞̻̭";assert("data:text/plain;base64.decode,$x");