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<?php function ean_checksum($eancode) { $result = false; if(strlen($eancode) == 13) { $check_code = substr($check_code, 12, 1); $eancode = substr($eancode, 0, 12); $oddsum=0; $evensum=0; $total=0; $eanvalue=$eancode; $finalean = strrev(substr($eanvalue,0,12)); for($i=0;$i<strlen($finalean);$i++) { if(($i % 2) == 0) { $oddsum += intval($finalean[$i]); } else { $evensum += intval($finalean[$i]); } } $total = ($oddsum * 3) + $evensum; $check = intval(10 - ceil($total % 10.0)) %10; if($check == $check_code) { $result = true; } } return $result; } $ean = '0744361007208'; echo ean_checksum($ean);
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Warning: Undefined variable $check_code in /in/GuWZO on line 5 Deprecated: substr(): Passing null to parameter #1 ($string) of type string is deprecated in /in/GuWZO on line 5
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Warning: Undefined variable $check_code in /in/GuWZO on line 5 Deprecated: substr(): Passing null to parameter #1 ($string) of type string is deprecated in /in/GuWZO on line 5
Output for 8.0.0 - 8.0.30
Warning: Undefined variable $check_code in /in/GuWZO on line 5
Output for 5.0.4 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: check_code in /in/GuWZO on line 5
Output for 7.3.32 - 7.3.33
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.3
Notice: Undefined variable: check_code in /in/GuWZO on line 5
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233.76 ms | 402 KiB | 341 Q