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