August 2000
Intermediate to advanced
800 pages
13h 15m
English
Content preview from Core PHP Programming: Using PHP to Build Dynamic Web Sites
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Tokenizing
PHP allows for a simple model for tokenizing a string. Certain characters, of your choice, are considered separators. Strings of characters between separators are considered tokens. You may change the set of separators with each token you pull from a string, which is handy for irregular strings—that is, ones that aren't simply comma-separated lists.
Listing 16.1 accepts a sentence and breaks it into words using the strtok function, described in Chapter 9, "Data Functions." As far as the script is concerned, a word is surrounded by a space, punctuation, or either end of the sentence. Single and double quotes are left as part of the word.
Listing 16.1. Tokenizing a String
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Notice the addition of <END> to the input variable. This special ...
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