perl cheat sheet with examples

Summary:this page is a printf formatting cheat sheet. I originally created this cheat sheet for my own purposes, and then thought I would share it is here.A cool thing about the formatting syntax was that the specifiers you can use be printf very

The original English text comes from smashing Magazine. Translated by Woole. Reprint please indicate the source. Regular Expressions (Regular Expression, abbr. Regex) are powerful and can be used to find the information you need in a large string

The original English text is from Smashing Magazine. Translated by dummies. Indicate the source for reprinting. Regular Expression (Regular Expression,Abbr. regex) Is powerful and can be used to find the required information in a large string of

Document directory 1. Greedy/lazy 2. Back referencing) 3. Named capture group (named groups) 4. word boundaries) 5. Minimal group (atomic groups) 6. recursion (recursion) 7. Callback (callbacks) 8. Commenting) More resources) Regular

1. Use a SQL injection cheat sheetA basic principle is to never trust user-submitted data. Another rule is to escape (escape) when you send or store data. Can be summarized as: Filter input, Escape output (FIEO). Input filtering, output

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