Sharing the method of writing practical code snippets in php

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24. Create a CSV file from PHP data

Function generateCsv ($data, $delimiter =',', $enclosure ='") {$handle = fopen ('php://temp', 'ritual'); foreach ($data as $line) {fputcsv ($handle, $line, $delimiter, $enclosure);} rewind ($handle); while (! feof ($handle)) {$contents. = fread ($handle, 8192);} fclose ($handle); return $contents;}

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twenty-nine。 Number of retweets

Use this PHP snippet to check the number of retweets on your page URL

Function tweetCount ($url) {$content = file_get_contents ("http://api.tweetmeme.com/url_info?url=".$url); $element = new SimpleXmlElement ($content); $retweets = $element- > story- > url_count; if ($retweets) {return $retweets;} else {return 0;}}

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thirty。 Calculate the difference between two dates

thirty-one。 Delete folder contents

Function Delete ($path) {if (is_dir ($path) = true) {$files = array_diff (scandir ($path), array ('.','..')); foreach ($files as $file) {Delete (realpath ($path). '/'. $file);} return rmdir ($path);} else if (is_file ($path) = true) {return unlink ($path);} return false;}

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thirty-two。 Search for and highlight keywords in strings

Function highlighter_text ($text, $words) {$split_words = explode ("", $words); foreach ($split_words as $word) {$color = "# 4285F4"; $text = preg_replace ("| ($word) | Ui", "$1", $text);} return $text;}

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thirty-three。 Write to a file

thirty-four。 Download pictures according to URL

Function imagefromURL ($image,$rename) {$ch = curl_init ($image); curl_setopt ($ch, CURLOPT_HEADER, 0); curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt ($ch, CURLOPT_BINARYTRANSFER,1); $rawdata=curl_exec ($ch); curl_close ($ch); $fp = fopen ("$rename",'w'); fwrite ($fp, $rawdata); fclose ($fp);}

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thirty-five。 Check whether URL is valid

Function isvalidURL ($url) {$check = 0 check; if (filter_var ($url, FILTER_VALIDATE_URL)! = = false) {$check = 1;} return $check;}

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thirty-six。 Generate a QR code

Function qr_code ($data, $type = "TXT", $size = '150 million, $ec='L', $margin='0') {$types = array ("URL" =-> "http://"," TEL "= >" TEL: "," TXT "= >", "EMAIL" = > "MAILTO:"); if (! in_array ($type,array ("URL", "TEL", "TXT", "EMAIL")) {$type = "TXT") } if (! preg_match ('/ ^'. $types [$type].'/', $data) {$data = str_replace ("\\", ", $types [$type]). $data;} $ch = curl_init (); $data = urlencode ($data); curl_setopt ($ch, CURLOPT_URL, 'http://chart.apis.google.com/chart'); curl_setopt ($ch, CURLOPT_POST, true) Curl_setopt ($ch, CURLOPT_POSTFIELDS, 'chs='.$size.'x'.$size.'&cht=qr&chld='.$ec.' |'. $margin.'&chl='.$data); curl_setopt ($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt ($ch, CURLOPT_HEADER, false); curl_setopt ($ch, CURLOPT_TIMEOUT, 30); $response = curl_exec ($ch); curl_close ($ch); return $response;}

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thirty-seven。 Calculate the distance between two map coordinates

Function getDistanceBetweenPointsNew ($latitude1, $longitude1, $latitude2, $longitude2) {$theta = $longitude1-$longitude2; $miles = (sin (deg2rad ($latitude1)) * sin (deg2rad ($latitude2) + (cos (deg2rad ($latitude1)) * cos (deg2rad ($latitude2)) * cos (deg2rad ($theta); $miles = acos ($miles); $miles = rad2deg ($miles); $miles = $miles * 60 * 1.1515; $feet = $miles * 5280; $yards = $feet / 3; $feet = $kilometers * 1.609344; $kilometers = $kilometers * 1000 Return compact ('miles','feet','yards','kilometers','meters');}

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thirty-eight。 Get all the Tweets of a specific topic tag

Function getTweets ($hash_tag) {$url = 'http://search.twitter.com/search.atom?q='.urlencode($hash_tag); echo "

Connecting to $url...

"; $ch = curl_init ($url); curl_setopt ($ch, CURLOPT_RETURNTRANSFER, TRUE); $xml = curl_exec ($ch); curl_close ($ch); / / If you want to see the response from Twitter, uncomment this next part out: / / echo"

Response:

"; / echo".htmlspecialchars ($xml)."; $affected = 0; $twelement = new SimpleXMLElement ($xml); foreach ($twelement- > entry as $entry) {$text = trim ($entry- > title); $author = trim ($entry- > author- > name); $time = strtotime ($entry- > published); $id = $entry- > id; echo "

Tweet from ". $author.": ". $text." Posted ".date ('n/j/y GRV I am responsible for the last month)."

";} return true;}

thirty-nine。 Add th,st,nd or rd as the suffix of the number

Friday the 13thfunction ordinal ($cdnl) {$test_c = abs ($cdnl)% 10; $ext = ((abs ($cdnl) 0)

< 21 && abs($cdnl) 0 >

4)? 'th': ($test_c < 4)? ($test_c < 3)? ($test_c < 2)? ($test_c < 1)? 'th':' st': 'nd':' rd': 'th'); return $cdnl.$ext;}

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forty。 Limit the speed of file download

forty-one。 Convert text into pictures

forty-two。 Get the size of the remote file

Function remote_filesize ($url, $user = "", $pw = "") {ob_start (); $ch = curl_init ($url); curl_setopt ($ch, CURLOPT_HEADER, 1); curl_setopt ($ch, CURLOPT_NOBODY, 1); if (! empty ($user) & &! empty ($pw)) {$headers = array ('Authorization: Basic'. Base64_encode ("$user:$pw"); curl_setopt ($ch, CURLOPT_HTTPHEADER, $headers);} $ok = curl_exec ($ch); curl_close ($ch); $head = ob_get_contents (); ob_end_clean (); $regex ='/ Content-Length:\ s ([0-9]. +?)\ s Universe; $count = preg_match ($regex, $head, $matches); return isset ($matches [1])? $matches [1]: "unknown";}

Grammar

forty-three。 Using imagebrick to convert pdf to Image