PHP 忒聊 綴豖 ヶ輛 print_r (PHP 4) Description print_r() displays information about a variable in a way that's readable by humans. If given a string, integer or float, the value itself will be printed. If given an array, values will be presented in a format that shows keys and elements. Similar notation is used for objects. Remember that print_r() will move the array pointer to the end. Use reset() to bring it back to beginning. 枑尨: 峈賸滅砦最唗眻諉蔚賦彆怀堤善銡擬んㄛ蠟褫眕妏蚚怀堤諷秶滲杅ㄗoutput-control functionsㄘ懂眸鳳滲杅腔怀堤ㄛ甜參坳蠅悵湔善珨跺 string 倰腔曹講笢﹝ pre ?php $a = array ('a' = 'apple', 'b' = 'banana', 'c' = array ('x','y','z')); print_r ($a);? /pre Which will output: pre Array ([a] = apple [b] = banana [c] = Array ([0] = x [1] = y [2] = z)) /pre 蛁: Prior to PHP 4.0.4, print_r() will continue forever if given an array or object that contains a direct or indirect reference to itself. An example is print_r($GLOBALS) because $GLOBALS is itself a global variable that contains a reference to itself. See also ob_start(), var_dump(), and var_export(). 綴豖 れ萸 ヶ輛 isset 奻珨撰 serialize