| Conditions | 5 | 
| Paths | 4 | 
| Total Lines | 23 | 
| Code Lines | 13 | 
| Lines | 0 | 
| Ratio | 0 % | 
| Changes | 0 | ||
| 1 | <?php  | 
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| 46 | public function process(PHP_CodeSniffer_File $phpcsFile, $stackPtr)  | 
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| 47 |     { | 
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| 48 |         if ($this->supportsBelow('5.4') === false) { | 
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| 49 | return;  | 
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| 50 | }  | 
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| 51 | |||
| 52 | $tokens = $phpcsFile->getTokens();  | 
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| 53 | |||
| 54 |         if (strtolower($tokens[$stackPtr]['content']) !== 'class') { | 
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| 55 | return;  | 
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| 56 | }  | 
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| 57 | |||
| 58 | $prevToken = $phpcsFile->findPrevious(PHP_CodeSniffer_Tokens::$emptyTokens, ($stackPtr - 1), null, true, null, true);  | 
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| 59 |         if ($prevToken === false || $tokens[$prevToken]['code'] !== T_DOUBLE_COLON) { | 
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| 60 | return;  | 
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| 61 | }  | 
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| 62 | |||
| 63 | $phpcsFile->addError(  | 
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| 64 | 'The magic class constant ClassName::class was not available in PHP 5.4 or earlier',  | 
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| 65 | $stackPtr,  | 
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| 66 | 'Found'  | 
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| 67 | );  | 
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| 68 | }  | 
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| 69 | }  | 
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| 70 | 
You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.