In this chapter, we would learn how to upload file to the server using PHP script. Similar to sending text data, you also use a form to upload files. We would cover the following three topics:<\/p>\n
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The phpinfo()<\/em> page specifies the temporary directory where files are uploaded to. This is given by the upload_tmp_dir<\/strong><\/em> parameter. The maximum file size permitted for upload is given by the upload_max_filesize<\/strong> parameter. These parameters are set in the php.ini<\/em><\/strong> configuration file.<\/p>\n File upload takes place by the following process:<\/p>\n It is also to note that for the file to upload successfully, the upload PHP script should have write permission on those locations. The files being uploaded are available in the $_FILES associative array.<\/p>\n <\/p>\n The HTML form below creates an upload form. This form is method attribute must be set to POST<\/strong>. Also the enctype attribute is set to multipart\/form-data<\/strong>.\u00a0 The form below allows for image upload<\/p>\n This code displays a file upload form and allows the user to select a file and submit.<\/p>\n the end()<\/strong> function returns the last elements of an array<\/p>\n the explode()<\/strong> function splits a string into parts using a specified separator. In the code we use this function to split the filename and obtain the part following the dot(.).<\/p>\n <\/p>\n Notice that in the code above, we used a variable called $_FILES<\/strong>. This is a global variable that is an associative array of all the information related the file being uploaded.\u00a0 Assuming the name of the file upload input is image, then the following 5 variables would be created by PHP.<\/p>\n As an exercise for you, write\u00a0 create a file upload form and also display the information of the file being upload on the web page.<\/p>\n","protected":false},"excerpt":{"rendered":" In this chapter, we would learn how to upload file to the server using PHP script. Similar to sending text data, you also use a … <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[34],"class_list":["post-208","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-file-upload-in-php"],"yoast_head":"\n\n
2. Creating an Upload Form<\/strong><\/h4>\n
<?php<\/span>\r\n if<\/span>(isset<\/span>($_FILES<\/span>['photo'<\/span>])){\r\n $errors<\/span> =<\/span> array<\/span>();\r\n $fileName<\/span> =<\/span> $_FILES<\/span>['photo'<\/span>]['name'<\/span>];\r\n $fileSize<\/span> =<\/span> $_FILES<\/span>['photo'<\/span>]['size'<\/span>];\r\n $tempDir<\/span> =<\/span> $_FILES<\/span>['photo'<\/span>]['tmp_name'<\/span>];\r\n $fileType<\/span> =<\/span> $_FILES<\/span>['photo'<\/span>]['type'<\/span>];\r\n\r\n $fileExt<\/span> =<\/span> end<\/span>(explode<\/span>('.'<\/span>, $_FILES<\/span>['photo'<\/span>]['name'<\/span>]));\r\n\r\n $extensions<\/span> =<\/span> array<\/span>('jpg'<\/span>, 'png'<\/span>, 'jpeg'<\/span>);\r\n\r\n if<\/span>(in_array<\/span>($fileExt<\/span>, $extensions<\/span>) ===<\/span> false<\/span>){ \/\/validate the extension<\/span>\r\n $errors<\/span>[] =<\/span> \"Unknown file extension\"<\/span>;\r\n }\r\n\r\n if<\/span>($fileSize<\/span> ><\/span> 3023124<\/span>){ \/\/validate the size<\/span>\r\n $errors<\/span>[] =<\/span> \"File size must not exceed 3 MB\"<\/span>;\r\n }\r\n\r\n if<\/span>(empty<\/span>($errors<\/span>) ==<\/span> true<\/span>){\r\n move_uploaded_file<\/span>($tempDir<\/span>, \"uploads\/\"<\/span>.<\/span>$fileName<\/span>);\r\n echo<\/span> \"File successfully uploaded\"<\/span>;\r\n }\r\n else<\/span> {\r\n print_r<\/span>($errors<\/span>);\r\n }\r\n }\r\n?><\/span>\r\n<html><\/span>\r\n <form<\/span> action=<\/span>\"\"<\/span> enctype=<\/span>\"multipart\/form-data\"<\/span> method=<\/span>\"POST\"<\/span>><\/span>\r\n <input<\/span> type=<\/span>\"file\"<\/span> name=<\/span>\"photo\"<\/span> \/><\/span>\r\n <input<\/span> type=<\/span>\"submit\"<\/span> \/><\/span>\r\n <\/form><\/span>\r\n<\/html><\/span>\r\n<\/pre>\n3. Creating a File Upload Script<\/strong><\/h4>\n
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