peco で PHP のビルトイン関数の引数定義見るヤツ

peco_phprf

#!/bin/sh
selected_function=$(php -r '$fs=get_defined_functions();echo join(PHP_EOL, $fs["internal"]), PHP_EOL;' | sort | peco)

if [ -n "$selected_function" ]; then
  php --rf "$selected_function"
  exit 0
else
  echo "No function is selected"
  exit 1
fi

peco_phprf.gif