PHPLIB解决图片路径问题，大家看看这个是不是比较通用？

[多菜鸟]

用法和原来的一样。具体修改地方在代码里有中文说明。
只是在声明的时候要指定图片的路径，默认为当前目录，也就是模版目录。
注意一点的是图片目录要相对于模版目录的。

<?php
class Template {
var $classname = "Template";

/* if set, echo assignments */
var $debug = false;

/* $file[handle] = "filename"; */
var $file = array();

/* relative filenames are relative to this pathname */
var $root = "";

/* $varkeys[key] = "key"; $varvals[key] = "value"; */
var $varkeys = array();
var $varvals = array();

/* "remove" => remove undefined variables
* "comment" => replace undefined variables with comments
* "keep" => keep undefined variables
*/
var $unknowns = "remove";

/* "yes" => halt, "report" => report error, continue, "no" => ignore error quietly */
var $halt_on_error = "yes";

/* last error message is retained here */
var $last_error = "";

var $path = ".";
/***************************************************************************/
/* public: Constructor.
* root: template directory.
* unknowns: how to handle unknown variables.
*/
function Template($root = ".", $path = ".", $unknowns = "remove") {
$this->set_root($root);
$this->set_path($path);
$this->set_unknowns($unknowns);
}
/* 设置图片路径
*/
function set_path($path){
if($path == ".") return true;
if (!is_dir($this->root . "/" . $path)) {
$this->halt("set_path: $path is not a directory.");
return false;
}

$this->path = $path;
return true;
}

/* public: setroot(pathname $root)
* root: new template directory.
*/
function set_root($root) {
if (!is_dir($root)) {
$this->halt("set_root: $root is not a directory.");
return false;
}

$this->root = $root;
return true;
}

/* public: set_unknowns(enum $unknowns)
* unknowns: "remove", "comment", "keep"
*
*/
function set_unknowns($unknowns = "keep") {
$this->unknowns = $unknowns;
}

/* public: set_file(array $filelist)
* filelist: array of handle, filename pairs.
*
* public: set_file(string $handle, string $filename)
* handle: handle for a filename,
* filename: name of template file
*/
function set_file($handle, $filename = "") {
if (!is_array($handle)) {
if ($filename == "") {
$this->halt("set_file: For handle $handle filename is empty.");
return false;
}
$this->file[$handle] = $this->filename($filename);
} else {
reset($handle);
while(list($h, $f) = each($handle)) {
$this->file[$h] = $this->filename($f);
}
}
}

/* public: set_block(string $parent, string $handle, string $name = "")
* extract the template $handle from $parent,
* place variable {$name} instead.
*/
function set_block($parent, $handle, $name = "") {
if (!$this->loadfile($parent)) {
$this->halt("subst: unable to load $parent.");
return false;
}
if ($name == "")
$name = $handle;

$str = $this->get_var($parent);
$reg = "/<!--s+BEGIN $handles+-->(.*)\ns*<!--s+END $handles+-->/sm";
preg_match_all($reg, $str, $m);
$str = preg_replace($reg, "{" . "$name}", $str);
$this->set_var($handle, $m[1][0]);
$this->set_var($parent, $str);
$this->set_var($name);
}

/* public: set_var(array $values)
* values: array of variable name, value pairs.
*
* public: set_var(string $varname, string $value)
* varname: name of a variable that is to be defined
* value: value of that variable
*/
function set_var($varname, $value = "") {
if (!is_array($varname)) {
if (!empty($varname))
if ($this->debug) print "scalar: set *$varname* to *$value*<br>\n";
$this->varkeys[$varname] = "/".$this->varname($varname)."/";
$this->varvals[$varname] = $value;
} else {
reset($varname);
while(list($k, $v) = each($varname)) {
if (!empty($k))
if ($this->debug) print "array: set *$k* to *$v*<br>\n";
$this->varkeys[$k] = "/".$this->varname($k)."/";
$this->varvals[$k] = $v;
}
}
}

/* public: subst(string $handle)
* handle: handle of template where variables are to be substituted.
*/
function subst($handle) {
if (!$this->loadfile($handle)) {
$this->halt("subst: unable to load $handle.");
return false;
}

$str = $this->get_var($handle);
$str = @preg_replace($this->varkeys, $this->varvals, $str);
return $str;
}

/* public: psubst(string $handle)
* handle: handle of template where variables are to be substituted.
*/
function psubst($handle) {
print $this->subst($handle);

return false;
}

/* public: parse(string $target, string $handle, boolean append)
* public: parse(string $target, array $handle, boolean append)
* target: handle of variable to generate
* handle: handle of template to substitute
* append: append to target handle
*/
function parse($target, $handle, $append = false) {
if (!is_array($handle)) {
$str = $this->subst($handle);
if ($append) {
$this->set_var($target, $this->get_var($target) . $str);
} else {
$this->set_var($target, $str);
}
} else {
reset($handle);
while(list($i, $h) = each($handle)) {
$str = $this->subst($h);
$this->set_var($target, $str);
}
}

return $str;
}

function pparse($target, $handle, $append = false) {
print $this->parse($target, $handle, $append);
return false;
}

[多菜鸟]

/* public: get_vars()
*/
function get_vars() {
reset($this->varkeys);
while(list($k, $v) = each($this->varkeys)) {
$result[$k] = $this->varvals[$k];
}

return $result;
}

/* public: get_var(string varname)
* varname: name of variable.
*
* public: get_var(array varname)
* varname: array of variable names
*/
function get_var($varname) {
if (!is_array($varname)) {
return $this->varvals[$varname];
} else {
reset($varname);
while(list($k, $v) = each($varname)) {
$result[$k] = $this->varvals[$k];
}

return $result;
}
}

/* public: get_undefined($handle)
* handle: handle of a template.
*/
function get_undefined($handle) {
if (!$this->loadfile($handle)) {
$this->halt("get_undefined: unable to load $handle.");
return false;
}

preg_match_all("/{([^}]+)}/", $this->get_var($handle), $m);
$m = $m[1];
if (!is_array($m))
return false;

reset($m);
while(list($k, $v) = each($m)) {
if (!isset($this->varkeys[$v]))
$result[$v] = $v;
}

if (count($result))
return $result;
else
return false;
}

/* public: finish(string $str)
* str: string to finish.
*/
function finish($str) {
switch ($this->unknowns) {
case "keep":
break;

case "remove":
$str = preg_replace('/{[^ \t\r\n}]+}/', "", $str);
break;

case "comment":
$str = preg_replace('/{([^ \t\r\n}]+)}/', "<!-- Template $handle: Variable \1 undefined -->", $str);
break;
}

return $str;
}

/* public: p(string $varname)
* varname: name of variable to print.
*/
function p($varname) {
print $this->finish($this->get_var($varname));
}

function get($varname) {
return $this->finish($this->get_var($varname));
}

/***************************************************************************/
/* private: filename($filename)
* filename: name to be completed.
*/
function filename($filename) {
if (substr($filename, 0, 1) != "/") {
$filename = $this->root."/".$filename;
}

if (!file_exists($filename))
$this->halt("filename: file $filename does not exist.");

return $filename;
}

/* private: varname($varname)
* varname: name of a replacement variable to be protected.
*/
function varname($varname) {
return preg_quote("{".$varname."}");
}

/* private: loadfile(string $handle)
* handle: load file defined by handle, if it is not loaded yet.
*/
function loadfile($handle) {
if (isset($this->varkeys[$handle]) and !empty($this->varvals[$handle]))
return true;

if (!isset($this->file[$handle])) {
$this->halt("loadfile: $handle is not a valid handle.");
return false;
}
$filename = $this->file[$handle];

$str = implode("", @file($filename));
if (empty($str)) {
$this->halt("loadfile: While loading $handle, $filename does not exist or is empty.");
return false;
}

$str = $this->parsepath($str);//替换图片路径

$this->set_var($handle, $str);

return true;
}

/* 重新分析替换模版目录下指定路径(一般为图片文件路径)
*/
function parsepath($str = ""){
if("/" != substr($this->path, -1)){
$this->path .= "/";
}
if("./" == $this->path) return $str;
$str = preg_replace("|".$this->path."|", $this->root."/".$this->path, $str);
return $str;
}

/***************************************************************************/
/* public: halt(string $msg)
* msg: error message to show.
*/
function halt($msg) {
$this->last_error = $msg;

if ($this->halt_on_error != "no")
$this->haltmsg($msg);

if ($this->halt_on_error == "yes")
die("<b>Halted.</b>");

return false;
}

/* public, override: haltmsg($msg)
* msg: error message to show.
*/
function haltmsg($msg) {
printf("<b>Template Error:</b> %s<br>\n", $msg);
}
}
?>
<?
//这个声明表明moban目录和img目录在同一级目录下
$t = new Template("moban", "../img");

//这个表明img目录在moban目录里
$t = new Template("moban", "img");

?>

[多菜鸟]

怎么没有人用PHPLIB吗？还是我的修改的并没有应用价值？伤心呀~~~~~~~~~~~~~~~~~~

[strayly]

我一直用phplib，不错从没遇见过图片路径问题，

[lzkd]

顶一下....呵...我也用的是phplib,关于路径问题的确比较要命.一般我是把路径部分单独抓出来的.好好看看楼主的代码哈.

[keaizhong]

不会吧，那请教了，请问你是如何使用的？
你可不要告诉我你的图片和模版文件放在同一个目录里的哦。
我一般的目录是这样子的。
/--template
| |---images
| | |--image1.jpg
| | |--image2.jpg
| | |--image3.jpg
| |---moban1.htm
| |---moban2.htm
| |---moban2.htm
|---index.php
|---other.php

这样子的结果是moban1.htm,moban2.htm等文件里的图片路径一般就是images/image1.jgp之类的，
但被要目录下的PHP文件读取这些模版文件之后会出现图片找不到的情况，也就是应该把模版文件里的路径加上template目录

[keaizhong]

我刚才的问题问 strayly(飘在四方) 的，他有比楼主更好的方法吗？

[多菜鸟]

没有人给点儿意见呀。
看来只有自己独享了。