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常规思路:
1 检查GD和FreeType.在项目根目录(index.php同级)下放一个php文件
<?php
echo phpinfo();
?>
访问此文件,查看GD和FreeType支持和版本情况。
2 ,清除 utf-8文件的bom,常规情况下所有文件不应有bom,同样位置放一个PHP页,代码如下,访问该页面,运行一下即可。
<?php if (isset($_GET[‘dir‘])){ $basedir=$_GET[‘dir‘]; }else{ $basedir = ‘.‘; } $auto = 1; checkdir($basedir); function checkdir($basedir){ if ($dh = opendir($basedir)) { while (($file = readdir($dh)) !== false) { if ($file != ‘.‘ && $file != ‘..‘){ if (!is_dir($basedir."/".$file)) { echo "filename: $basedir/$file ".checkBOM("$basedir/$file")." <br>"; }else{ $dirname = $basedir."/".$file; checkdir($dirname); } } } closedir($dh); } } function checkBOM ($filename) { global $auto; $contents = file_get_contents($filename); $charset[1] = substr($contents, 0, 1); $charset[2] = substr($contents, 1, 1); $charset[3] = substr($contents, 2, 1); if (ord($charset[1]) == 239 && ord($charset[2]) == 187 && ord($charset[3]) == 191) { if ($auto == 1) { $rest = substr($contents, 3); rewrite ($filename, $rest); return ("<font color=red>BOM found, automatically removed._<a href=http://www.hengidc.com>http://www.hengidc.com</a></font>"); } else { return ("<font color=red>BOM found.</font>"); } } else return ("BOM Not Found."); } function rewrite ($filename, $data) { $filenum = fopen($filename, "w"); flock($filenum, LOCK_EX); fwrite($filenum, $data); fclose($filenum); } ?>
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原文地址:http://www.cnblogs.com/mengsx/p/5140129.html