[英]Strict Standards: Only variables should be passed by reference” error in thumnail creation
我正在request.php上使用php制作缩略图,但是由于一个错误,我的错误日志很快就被填充了。我在第13行获得了PHP严格的标准:仅应在/public_html/xxxxxx/thumbnail.php中通过引用传递变量13行
$sExtension = strtolower(end(explode('.', $sImagePath)));
我的完整代码在这里。
<?php
$sImagePath = $_GET["file"];
$iThumbnailWidth = (int)$_GET['width'];
$iThumbnailHeight = (int)$_GET['height'];
$iMaxWidth = (int)$_GET["maxw"];
$iMaxHeight = (int)$_GET["maxh"];
if ($iMaxWidth && $iMaxHeight) $sType = 'scale';
else if ($iThumbnailWidth && $iThumbnailHeight) $sType = 'exact';
$img = NULL;
$sExtension = strtolower(end(explode('.', $sImagePath)));
if ($sExtension == 'jpg' || $sExtension == 'jpeg') {
$img = @imagecreatefromjpeg($sImagePath)
or die("Cannot create new JPEG image");
} else if ($sExtension == 'png') {
$img = @imagecreatefrompng($sImagePath)
or die("Cannot create new PNG image");
} else if ($sExtension == 'gif') {
$img = @imagecreatefromgif($sImagePath)
or die("Cannot create new GIF image");
}
if ($img) {
$iOrigWidth = imagesx($img);
$iOrigHeight = imagesy($img);
if ($sType == 'scale') {
$fScale = min($iMaxWidth/$iOrigWidth,
$iMaxHeight/$iOrigHeight);
if ($fScale < 1) {
$iNewWidth = floor($fScale*$iOrigWidth);
$iNewHeight = floor($fScale*$iOrigHeight);
$tmpimg = imagecreatetruecolor($iNewWidth,
$iNewHeight);
imagecopyresampled($tmpimg, $img, 0, 0, 0, 0,
$iNewWidth, $iNewHeight, $iOrigWidth, $iOrigHeight);
imagedestroy($img);
$img = $tmpimg;
}
} else if ($sType == "exact") {
$fScale = max($iThumbnailWidth/$iOrigWidth,
$iThumbnailHeight/$iOrigHeight);
if ($fScale < 1) {
$iNewWidth = floor($fScale*$iOrigWidth);
$iNewHeight = floor($fScale*$iOrigHeight);
$tmpimg = imagecreatetruecolor($iNewWidth,
$iNewHeight);
$tmp2img = imagecreatetruecolor($iThumbnailWidth,
$iThumbnailHeight);
imagecopyresampled($tmpimg, $img, 0, 0, 0, 0,
$iNewWidth, $iNewHeight, $iOrigWidth, $iOrigHeight);
if ($iNewWidth == $iThumbnailWidth) {
$yAxis = ($iNewHeight/2)-
($iThumbnailHeight/2);
$xAxis = 0;
} else if ($iNewHeight == $iThumbnailHeight) {
$yAxis = 0;
$xAxis = ($iNewWidth/2)-
($iThumbnailWidth/2);
}
imagecopyresampled($tmp2img, $tmpimg, 0, 0,
$xAxis, $yAxis,
$iThumbnailWidth,
$iThumbnailHeight,
$iThumbnailWidth,
$iThumbnailHeight);
imagedestroy($img);
imagedestroy($tmpimg);
$img = $tmp2img;
}
}
header("Content-type: image/jpeg");
imagejpeg($img);
}
?>
任何帮助将不胜感激
尝试这样做:
$sExtension = explode('.', $sImagePath);
$file_extension = strtolower(end($sExtension));
end
需要引用,因为它修改了数组的内部表示。
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