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<?php function isPhpKeyword($testString) { // First check it's actually a word and not an expression/number/empty string if (!preg_match('/^[a-z]+$/i', $testString)) { return false; } $tokenised = token_get_all('<?php ' . $testString . '; ?>'); // tokenised[0] = opening PHP tag, tokenised[1] = our test string return reset($tokenised[1]) !== T_STRING; } var_dump( isPhpKeyword('if'), isPhpKeyword('flibble'), isPhpKeyword('while') );
Output for git.master, git.master_jit, rfc.property-hooks
bool(true) bool(false) bool(true)

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