废话不多说了，直接给大家贴php等比压缩图片大小的相关代码了，具体代码如下所示：

? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 <?php $im = imagecreatefromjpeg('D:phpplace.jpeg'); resizeImage($im,,,'xinde','.jpg'); function resizeImage($im,$maxwidth,$maxheight,$name,$filetype) { $pic_width = imagesx($im); $pic_height = imagesy($im); echo "start-----------------" ; if(($maxwidth && $pic_width > $maxwidth) && ($maxheight && $pic_height > $maxheight)) { if($maxwidth && $pic_width>$maxwidth) { $widthratio = $maxwidth/$pic_width; $resizewidth_tag = true; } if($maxheight && $pic_height>$maxheight) { $heightratio = $maxheight/$pic_height; $resizeheight_tag = true; } if($resizewidth_tag && $resizeheight_tag) { if($widthratio<$heightratio) $ratio = $widthratio; else $ratio = $heightratio; } if($resizewidth_tag && !$resizeheight_tag) $ratio = $widthratio; if($resizeheight_tag && !$resizewidth_tag) $ratio = $heightratio; $newwidth = $pic_width * $ratio; $newheight = $pic_height * $ratio; if(function_exists("imagecopyresampled")) { $newim = imagecreatetruecolor($newwidth,$newheight); imagecopyresampled($newim,$im,,,,,$newwidth,$newheight,$pic_width,$pic_height); } else { $newim = imagecreate($newwidth,$newheight); imagecopyresized($newim,$im,,,,,$newwidth,$newheight,$pic_width,$pic_height); } $name = $name.$filetype; imagejpeg($newim,$name); imagedestroy($newim); } else { $name = $name.$filetype; imagejpeg($im,$name); } }

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