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Object could not be converted to string?
我需要为我的图像创建随机标题，但出现错误
MPRandomText 类的对象无法转换为字符串 C:\Program Files (x86)\EasyPHP-5.3.9\www\dir.php 第 42 行
如何将随机文本包含到我的 html 图像标题中？
class MPRandomText
{
var $filepath;
var $sepstring;
var $fixchar;
var $textfix;
var $contents;
var $random;
var $errors;
// initiate object and start functions
function MPRandomText($filepath, $sepstring, $textfix)
{
$this->filepath = $filepath;
$this->textfix = $textfix;
$this->sepstring = $sepstring;
$this->errors = "";
$this->contents = "";
$this->FileToString();
}
// read file contents into string variable
function FileToString()
{
if (!$this->filepath || !file_exists($this->filepath))
$this->errors = "Could not find text file at ".$this->filepath;
else {
@$filePointer = fopen($this->filepath, "r");
if (!$filePointer) $this->errors = "Text file could not be opened.";
if ($this->errors == "")
{
$this->contents = fread($filePointer, filesize($this->filepath));
fclose($filePointer);
if (!$this->textfix) $this->HTMLContent();
$this->MakeArray();
}
}
}
// if importing an HTML page, drop everything outside of (and including) the <body> tags
function HTMLContent()
{
$test = stristr($this->contents, "<body");
if ($test !== false)
{
$test = stristr($test, ">");
if ($test !== false)
{
$test = str_replace("</BODY>", "</body>", $test);
$test = explode("</body>", substr($test, 1));
if (count($test) > 1) $this->contents = $test[0];
}
}
}
// convert the file text into a list using separation character
function MakeArray()
{
$array = explode($this->sepstring, $this->contents);
if (count($array) > 0)
{
$this->contents = $array;
$this->CleanTextList();
} else $this->errors = "Text file contents are empty or could not be read.";
}
// clean up the list of empty values and extra white space
function CleanTextList()
{
$result = array();
if (is_array($this->contents))
{
for ($n=0; $n<count($this->contents); $n++)
{
$string = trim($this->contents[$n]);
$test = trim($string."test");
if (!empty($string) AND $test != "test") $result[] = $string;
}
if (count($result) > 0)
{
$this->contents = $result;
$this->RandomString();
}
}
}
// get random text string from list
function RandomString()
{
reset($this->contents);
srand((double) microtime() * 1000000);
shuffle($this->contents);
$this->random = $this->contents[0];
}
// send finished results to be printed into HTML page
function GetResults()
{
if ($this->errors != "") return $this->errors;
else
{
if ($this->textfix == true) $this->random = htmlentities($this->random);
return $this->random;
}
}
}
//-------------------------------------------------------------------------------------------------
// FUNCTION AND VARIABLE TO CREATE RANDOM TEXT INSTANCE
//-------------------------------------------------------------------------------------------------
// create variable to store instance references
$MPRandomTextHandles = array();
// function to create new handle and import random text
function MPPrintRandomText($MPTextFile = "random.txt", $MPSepString = "*divider*", $MPTextToHTML = false)
{
global $MPRandomTextHandles;
for ($n=0; $n<250; $n++)
{
if (!isset($MPRandomTextHandles[$n]))
{
$MPRandomTextHandles[$n] = new MPRandomText($MPTextFile, $MPSepString, $MPTextToHTML);
break;
}
}
print($MPRandomTextHandles[$n]->GetResults());
return $MPRandomTextHandles[$n];
}
/* Начало конфигурации */
$thumb_directory = 'img/thumbs';
$orig_directory = 'img/imag';
/* Конец конфигурации */
$allowed_types=array('jpg','jpeg','gif','png');
$file_parts=array();
$ext='';
$title='';
$title1='גילוף פסלים בעץ';
$i=0;
/* Открываем папку с миниатюрами и пролистываем каждую из них */
$dir_handle = @opendir($thumb_directory) or die("There is an error with your
image directory!");
$i=1;
while ($file = readdir($dir_handle))
{
/* Пропускаем системные файлы: */
if($file=='.' || $file == '..') continue;
$file_parts = explode('.',$file);
$ext = strtolower(array_pop($file_parts));
/* Используем название файла (без расширения) в качестве названия изображения: */
// $title = implode('.',$file_parts);
// $title = htmlspecialchars($title);
include_once("GetRandomText.php");
$MPTextFile = "random.txt";
$MPSepString = "*divider*";
$MPTextToHTML = false;
$title = MPPrintRandomText($MPTextFile, $MPSepString, $MPTextToHTML);
/* Если расширение разрешено: */
if(in_array($ext,$allowed_types))
{
/* Выдаем каждое фото: */
echo '<li>
<a href="'.$orig_directory.'/'.$file.'" rel="lightbox[pasel]">
<img title="'.$title.'" src="'.$thumb_directory.'/'.$file.'" width="72" height="72" alt="גילוף פסלים בעץ" />
</a>
</li>';
}
}
/* Закрываем папку */
closedir($dir_handle);
最佳答案
$title 是 MPRandomText 的实例。您在输出中连接了 $title，但 MPRandomText 没有实现 __toString()，因此它无法转换为字符串。
<?php
$title = MPPrintRandomText($MPTextFile, $MPSepString, $MPTextToHTML);
// MPPrintRandomText returns an instance of MPRandomText
/* Если расширение разрешено: */
if(in_array($ext,$allowed_types))
{
/* Выдаем каждое фото: */
echo '<li>
<a href="'.$orig_directory.'/'.$file.'" rel="lightbox[pasel]">
<img title="'.$title.'" src="'.$thumb_directory.'/'.$file.'" width="72" height="72" alt="גילוף פסלים בעץ" />
</a>
</li>';
// concatenating $title here will fail because MPRandomText does not implement __toString()
}
}
?>
关于php - MPRandomText 类的对象无法转换为字符串，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/10349236/