/** * PHP实现文字写入图片 */class wordsOnImg { public $config = null; /** * @param $config 传入参数 * @param $config['file'] 图片文件 * @param $config['size'] 文字大小 * @param $config['angle'] 文字的水平角度 * @param $config['fontfile'] 字体文件路径 * @param $config['width'] 预先设置的宽度 * @param $config['x'] 开始写入时的横坐标 * @param $config['y'] 开始写入时的纵坐标 */ public function __construct($config=null){ if(empty($config)){ return 'must be config'; } $fileArr = explode(".",$config['file']); $config['file_name'] = $fileArr[0]; $config['file_ext'] = $fileArr[1]; $this->config = $config; } /** * PHP实现图片上写入实现文字自动换行 * @param $fontsize 字体大小 * @param $angle 角度 * @param $font 字体路径 * @param $string 要写在图片上的文字 * @param $width 预先设置图片上文字的宽度 * @param $flag 换行时单词不折行 */ public function wordWrap($fontsize,$angle,$font,$string,$width,$flag=true) { $content = ""; if($flag){ $words = explode(" ",$string); foreach ($words as $key=>$value) { $teststr = $content." ".$value; $testbox = imagettfbbox($fontsize, $angle, $font, $teststr); //判断拼接后的字符串是否超过预设的宽度 if(($testbox[2] > $width)) { $content .= "/n"; } $content .= $value." "; } }else{ //将字符串拆分成一个个单字 保存到数组 letter 中 for ($i=0;$i<mb_strlen($string);$i++) { $letter[] = mb_substr($string, $i, 1); } foreach ($letter as $l) { $teststr = $content." ".$l; $testbox = imagettfbbox($fontsize, $angle, $font, $teststr); // 判断拼接后的字符串是否超过预设的宽度 if (($testbox[2] > $width) && ($content !== "")) { $content .= "/n"; } $content .= $l; } } return $content; } /** * 实现写入图片 * @param $text 要写入的文字 * @param $flag 是否直接输出到浏览器，默认是 */ public function writeWordsToImg($text,$flag=true){ if(empty($this->config)){ return 'must be config'; } //获取图片大小 $img_pathWH = getimagesize($this->config['file']); //打开指定的图片文件 $im = imagecreatefrompng($this->config['file']); #设置水印字体颜色 $color = imagecolorallocatealpha($im,0, 0, 255, 75);//蓝色 $have = false; if(stripos($text,"<br/>")!== false){ $have = true; } if($have){ $words_text = explode("<br/>",$text); $words_text[0] = $this->wordWrap($this->config['size'], $this->config['angle'], $this->config['fontfile'], $words_text[0], $this->config['width']); //自动换行处理 $words_text[1] = $this->wordWrap($this->config['size'], $this->config['angle'], $this->config['fontfile'], $words_text[1], $this->config['width']); //自动换行处理 $words_text[2] = $this->wordWrap($this->config['size'], $this->config['angle'], $this->config['fontfile'], $words_text[2], $this->config['width']); //自动换行处理 imagettftext($im, $this->config['size'], $this->config['angle'], $this->config['x'], $this->config['y'], $color, $this->config['fontfile'], $words_text[0]); imagettftext($im, $this->config['size'], $this->config['angle'], $this->config['x'], $this->config['y']+30, $color, $this->config['fontfile'], " ".$words_text[1]); imagettftext($im, $this->config['size'], $this->config['angle'], $img_pathWH[0]/2+70, $img_pathWH[1]-80, $color, $this->config['fontfile'], $words_text[2]); if($flag){ header("content-type:image/png"); imagepng($im); imagedestroy($im); } imagepng($im,$this->config['file_name'].'_1.'.$this->config['file_ext']); imagedestroy($im); } $words_text = $this->wordWrap($this->config['size'], $this->config['angle'], $this->config['fontfile'], $text, $this->config['width']); //自动换行处理 imagettftext($im, $this->config['size'], $this->config['angle'], $this->config['x'], $this->config['y'], $color, $this->config['fontfile'], $words_text); if($flag){ header("content-type:image/png"); imagepng($im); imagedestroy($im); } imagepng($im,$this->config['file_name'].'_1.'.$this->config['file_ext']); imagedestroy($im); }} $text = "Dear Kang<br/>If you can hold something up and put it down, it is called weight lifting;if you can hold something up but can never put it down, it's called bueden bearing. Pitifully, most of people are bearing heavy burdens when they are in love./n/nBeing nice to someone you dislike doesn't mean you're a hypocritical people. It means you're mature enough to tolerate your dislike towards them.<br/>Mr. Kang"; $data = array( 'file'=>'20171226152410.png', 'size'=>12, 'angle'=>0, 'fontfile'=>'./Font/ChalkboardSE.ttc', 'width'=>270, 'x'=>20, 'y'=>70);//使用$wordsOnImgObj = new wordsOnImg($data);$wordsOnImgObj->writeWordsToImg($text); 
