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PHP json_last_error() 函数
demo_json_error
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<!DOCTYPE html> <html> <body> <?php // An invalid json string $string = "{'Peter':35,'Ben':37,'Joe':43}"; echo "Decoding: " . $string; json_decode($string); echo "<br>Error: "; switch (json_last_error()) { case JSON_ERROR_NONE: echo "No errors"; break; case JSON_ERROR_DEPTH: echo "Maximum stack depth exceeded"; break; case JSON_ERROR_STATE_MISMATCH: echo "Invalid or malformed JSON"; break; case JSON_ERROR_CTRL_CHAR: echo "Control character error"; break; case JSON_ERROR_SYNTAX: echo "Syntax error"; break; case JSON_ERROR_UTF8: echo "Malformed UTF-8 characters"; break; default: echo "Unknown error"; break; } ?> </body> </html>