(PHP 4, PHP 5, PHP 7)
print_r — 锟斤拷锟斤拷锟斤拷锟斤拷锟侥革拷式锟斤拷印锟斤拷锟斤拷锟斤拷
print_r() 锟斤拷锟斤拷锟斤拷锟阶讹拷锟侥革拷式锟斤拷示一锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷息锟斤拷
print_r()锟斤拷 var_dump()锟斤拷 var_export() 锟斤拷锟斤拷锟斤拷示锟斤拷锟斤拷 protected 锟斤拷 private 锟斤拷锟斤拷锟皆★拷 Class 锟侥撅拷态锟斤拷锟皆ｏ拷static锟斤拷 锟津不伙拷锟斤拷示锟斤拷
expression要锟斤拷印锟侥憋拷锟绞斤拷锟�
return
锟斤拷要锟斤拷取 print_r() 锟斤拷锟斤拷锟斤拷锟斤拷荩锟绞癸拷锟� return 锟斤拷锟斤拷锟斤拷
锟斤拷锟剿诧拷锟斤拷为 TRUE锟斤拷print_r() 锟斤拷直锟接凤拷锟斤拷锟斤拷息锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟�
锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷 string锟斤拷 integer 锟斤拷 float锟斤拷锟斤拷直锟斤拷锟斤拷锟街碉拷锟斤拷锟� 锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷 array锟斤拷展示锟侥革拷式锟斤拷锟斤拷示锟斤拷锟斤拷募锟斤拷桶锟斤拷锟斤拷锟皆拷亍锟�object 也锟斤拷锟狡★拷
锟斤拷 return 锟斤拷锟斤拷锟斤拷锟矫筹拷 TRUE锟斤拷锟斤拷锟斤拷锟斤拷锟结返锟斤拷 string 锟斤拷式锟斤拷锟斤拷锟津返伙拷 TRUE锟斤拷
Note:
锟斤拷使锟斤拷锟斤拷
return锟斤拷锟斤拷时锟斤拷锟斤拷锟斤拷锟斤拷使锟斤拷锟斤拷锟节诧拷锟斤拷锟斤拷锟斤拷澹拷锟剿诧拷锟斤拷锟斤拷 ob_start() 锟截碉拷锟斤拷锟斤拷锟斤拷锟节诧拷使锟矫★拷
Example #1 print_r() 锟斤拷锟斤拷
<pre>
<?php
$a = array ('a' => 'apple', 'b' => 'banana', 'c' => array ('x', 'y', 'z'));
print_r ($a);
?>
</pre>
锟斤拷锟斤拷锟斤拷锟教伙拷锟斤拷锟斤拷锟�
<pre>
Array
(
[a] => apple
[b] => banana
[c] => Array
(
[0] => x
[1] => y
[2] => z
)
)
</pre>
Example #2 return 锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷
<?php
$b = array ('m' => 'monkey', 'foo' => 'bar', 'x' => array ('x', 'y', 'z'));
$results = print_r($b, true); // $results 锟斤拷锟斤拷锟斤拷 print_r 锟斤拷锟斤拷锟�
?>