Php Chinese verification code implementation method, _ PHP Tutorial

Php Chinese verification code implementation method ,. Php Chinese verification code implementation method. This article describes the php Chinese verification code implementation method. Share it with you for your reference. The specific analysis is as follows: the specific code is as follows: php Chinese verification code implementation method,

This document describes how to implement the php Chinese verification code. Share it with you for your reference. The specific analysis is as follows:

First look at the following:

The code is as follows:

<? Php/********************************** Code by Gently * 24/07/07 * solemn statement: the verification code is randomly generated by the program. The word combinations of "some coincidence" are normal. * Some people with ulterior motives should not give full play to the problem! * Power by ZendStudio. net ********************************/session_start (); header ("Content-type: image/PNG"); $ w = 180; $ h = 60; $ fontface = "C: \ WINDOWS \ Fonts \ MSYH. TTF "; // font file $ str = "When I arrive at his meeting, I want to make a Chinese product. first, I will make a step-by-year release to the people who are allowed to come in. for lower-level students, they use their peers to say that they are too desperate, and after many sub-students, the social and small computers also rely on their own power lines, the high volume of electricity, the party has to set the depth of the House, the method of water and chemistry competing for the second political, third-party, third-party, and ten-party war without the need of agriculture, and other anti-body and fighting routes map the things that are being discussed in the beginning from when the two are still part of the Tianzi team to emphasize their thoughts and in the meantime, due to the daily profit of parts, the whole group is replaced by the pressure worker's gas industry. in the fruit period, the base or the month are flat. if you want to develop your mind, you need to change your mind. and the outside did not see governance mention five solutions Lin's Rice Group head meaning only four horses recognize the article, but more grams and Kong leading to the seat transport and fly The essence of the crude oil is that the people who build the district to test the work are very taught. here, Shi Qiang is very rare, and there have been a total of direct regimental conversion. do you want to take the West holding total materials for re-election? shan Cheng Baibao is more aware of the need to ensure the heat Commission's hand to change the management of the department has been to repair the awareness of the disease like a few first, the old light of the six type with a secondary safety belt each east, then the wind back to the south wide labor wheel North build a car for the festival to do the work is the whole joint step Set No. column temperature installation that is no knowledge of the axis of the study of the monochrome solid data fast anti-Shile set Dalat field weaving calendar flower by seeking to pass the mouth broken condition mining fine gold industry product determination parameter layer end side clear to ten indeed research book surgery factory should be from the eyes of the sea to pay the right and children Qingcai certificate lower beyond the eight trial form near Note run bumen iron need to go to the county Bing Gu in addition to the general teeth, Qisheng, Xiying, Jibai GE efficiency, push empty configuration, blade rate, this election, Yangde, phone query, difference, half enemy, initial film, Shi Xiang, Hua Jue, slave name, Red, average drug marker, hard to store tester body tight liquid send quasi-Jin angle Dimension Reduction Board Xu broke the technical elimination bottom bed Field trend sense to Shen benhe village structure Photo volume not engaged in sub-grinding fire section suitable for discussion according to the value of the United States Huang Yi Biao service early shift Mai cut letter row sound the attacker Zhang Mi harm Hou Cao he shufa following the right city strict diameter screw inspection left Page anti Su Xian bitter English Fast said bad how can I plant the needles of Emperor He in wupei, the province of WUBA city, to help Shengwang's eyes? she caught the seedlings and talked about the food sources. the old ones were sour, but there were plenty of short strokes. the first ruler wave of the xuanjicang is used to win the powder and practice the fish. with the test, the full husband is enough to lose the bag. 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$ code = ""; for ($ I = 0; $ I <4; $ I ++) {$ Xi = mt_rand (0, strlen ($ str)/2 ); if ($ Xi % 2) $ Xi + = 1; $ code. = substr ($ str, $ Xi, 2) ;}$ _ SESSION ['code'] = $ code; $ im = imagecreatetruecolor ($ w, $ h ); $ bkcolor = imagecolorallocate ($ im, 250,250,250); imagefill ($ im, $ bkcolor);/*** add interference ***/for ($ I = 0; $ I <15; $ I ++) {$ fontcolor = imagecolorallocate ($ im, mt_rand (0,255), mt_rand (0,255), mt_rand (0,255); imagearc ($ im, mt_rand (-10, $ w), mt_rand (-10, $ h), mt_rand (30,300 ), mt_rand (20,200), 55,44, $ fontcolor) ;}for ($ I = 0; $ I <255; $ I ++) {$ fontcolor = imagecolorallocate ($ im, mt_rand (0,255), mt_rand (0,255), mt_rand (0,255); imagesetpixel ($ im, mt_rand (0, $ w), mt_rand (0, $ h ), $ fontcolor);}/********************/for ($ I = 0; $ I <4; $ I ++) {$ fontcolor = imagecolorallocate ($ im, mt_rand (0,120), mt_rand (0,120), mt_rand (0,120); // This ensures that the random color is darker. $ Codex = iconv ("GB2312", "UTF-8", substr ($ code, $ I *); imagettftext ($ im, mt_rand (20, 24 ), mt_rand (-60, 60), 40 * $ I + 20, mt_rand (30,35), $ fontcolor, $ fontface, $ codex);} imagepng ($ im);?>

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Example: how to implement the php Chinese verification code. Share it with you for your reference. The specific analysis is as follows: the specific code is as follows...