The original 2013 post is 404 and was not archived by IA: https://philsturgeon.com/blog/2013/09/wtf-is-t-paamayim-neku...
'T_PAAMAYIM_NEKUDOTAYIM' is the PHP parser's name for the '::' double-colon/scope-resolution-operator token; it means 'T_DOUBLE_COLON' in Hebrew, hence related parser error messages mean "Unexpected double-colon/scope-resolution-operator found". There was some controversy in the PHP community in 2013 about keeping the non-English naming as it was widely considered confusing to users.