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You are reading the docs for an old version of Statamic. Consider upgrading to Statamic 6.

Is Alphanumeric Modifier

Returns true if string contains only alphanumeric characters. Punctuation, whitespace, and another other special characters will cause a false.

secret_phrase: abc123

even_more_secret_phrase: abc123!@#

{{ if secret_phrase | is_alphanumeric }}

{{ if even_more_secret_phrase | is_alphanumeric }}

@if (Statamic::modify($secret_phrase)->isAlphanumeric()->fetch()) @endif

@if (Statamic::modify($even_more_secret_phrase)->isAlphanumeric()->fetch()) @endif

true

false