Keyword Analysis & Research: str function in php

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Frequently Asked Questions

What is the use of strstr() function?

Definition and Usage. The strstr() function searches for the first occurrence of a string inside another string. Note: This function is binary-safe. Note: This function is case-sensitive. For a case-insensitive search, use stristr() function.

What is STR_contains() function?

The str_contains () function search for the substring in the given string within the expression. If the substring mentioned will be present in the string then it will return True otherwise it will return False. The str_contains () function is very similar to strpos () function.

Why is there no string-to-array function?

No string-to-array function exists because it is not needed. If you reference a string with an offset like you do with an array, the character at that offset will be return. This is documented in section III.11's "Strings" article under the "String access and modification by character" heading. Here's an easier way to find nth...

Does strlen iterate the whole string?

Assuming strlen does not iterate the whole string (but even in that case) this is not convenient at all. There's only a speed up if the first characters are different. @Jack yes, of course, the idea is that statistically that happens, so the speedup is generrally a 20%-30% over the whole test set (including cases where it is not different).


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